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Finding the Fourth Proportional to 1,170.77, 1,615.55 and 751.10

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Solution

The fourth proportional to 1,170.77, 1,615.55 and 751.10 is: 1,036.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,170.77 : 1,615.55 = 751.10 : x
  2. Step 2: Convert to fraction form
    1,170.77/1,615.55 = 751.10/x
  3. Step 3: Cross multiply
    1,170.77x = 1,615.55 × 751.10
  4. Step 4: Simplify right side
    1,170.77x = 1,213,427.77
  5. Step 5: Solve for x
    x = 1,213,427.77/1,170.77
  6. Step 6: Final answer
    x = 1,036.44

Related Problems

Find fourth proportional to 585.38, 807.77 and 375.55
Half scale
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Double scale
Find fourth proportional to 1,171.77, 1,616.92 and 752.10
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.