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Finding the Fourth Proportional to 1,154.85, 1,593.53 and 657.47

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Solution

The fourth proportional to 1,154.85, 1,593.53 and 657.47 is: 907.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,154.85 : 1,593.53 = 657.47 : x
  2. Step 2: Convert to fraction form
    1,154.85/1,593.53 = 657.47/x
  3. Step 3: Cross multiply
    1,154.85x = 1,593.53 × 657.47
  4. Step 4: Simplify right side
    1,154.85x = 1,047,691.85
  5. Step 5: Solve for x
    x = 1,047,691.85/1,154.85
  6. Step 6: Final answer
    x = 907.21

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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.