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Finding the Fourth Proportional to 1,134.76, 1,566.08 and 715.08

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Solution

The fourth proportional to 1,134.76, 1,566.08 and 715.08 is: 986.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,134.76 : 1,566.08 = 715.08 : x
  2. Step 2: Convert to fraction form
    1,134.76/1,566.08 = 715.08/x
  3. Step 3: Cross multiply
    1,134.76x = 1,566.08 × 715.08
  4. Step 4: Simplify right side
    1,134.76x = 1,119,872.68
  5. Step 5: Solve for x
    x = 1,119,872.68/1,134.76
  6. Step 6: Final answer
    x = 986.88

Related Problems

Find fourth proportional to 567.38, 783.04 and 357.54
Half scale
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Double scale
Find fourth proportional to 1,135.76, 1,567.46 and 716.08
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.