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Finding the Fourth Proportional to 1,175.22, 1,621.69 and 703.02

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Solution

The fourth proportional to 1,175.22, 1,621.69 and 703.02 is: 970.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,175.22 : 1,621.69 = 703.02 : x
  2. Step 2: Convert to fraction form
    1,175.22/1,621.69 = 703.02/x
  3. Step 3: Cross multiply
    1,175.22x = 1,621.69 × 703.02
  4. Step 4: Simplify right side
    1,175.22x = 1,140,081.38
  5. Step 5: Solve for x
    x = 1,140,081.38/1,175.22
  6. Step 6: Final answer
    x = 970.10

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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.