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Finding the Fourth Proportional to 736.25, 1,015.84 and 539.42

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Solution

The fourth proportional to 736.25, 1,015.84 and 539.42 is: 744.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    736.25 : 1,015.84 = 539.42 : x
  2. Step 2: Convert to fraction form
    736.25/1,015.84 = 539.42/x
  3. Step 3: Cross multiply
    736.25x = 1,015.84 × 539.42
  4. Step 4: Simplify right side
    736.25x = 547,964.41
  5. Step 5: Solve for x
    x = 547,964.41/736.25
  6. Step 6: Final answer
    x = 744.26

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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.