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Finding the Fourth Proportional to 736.13, 1,015.56 and 539.30

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Solution

The fourth proportional to 736.13, 1,015.56 and 539.30 is: 744.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    736.13 : 1,015.56 = 539.30 : x
  2. Step 2: Convert to fraction form
    736.13/1,015.56 = 539.30/x
  3. Step 3: Cross multiply
    736.13x = 1,015.56 × 539.30
  4. Step 4: Simplify right side
    736.13x = 547,694.05
  5. Step 5: Solve for x
    x = 547,694.05/736.13
  6. Step 6: Final answer
    x = 744.02

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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.