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Finding the Fourth Proportional to 534.40, 736.96 and 492.24

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Solution

The fourth proportional to 534.40, 736.96 and 492.24 is: 678.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    534.40 : 736.96 = 492.24 : x
  2. Step 2: Convert to fraction form
    534.40/736.96 = 492.24/x
  3. Step 3: Cross multiply
    534.40x = 736.96 × 492.24
  4. Step 4: Simplify right side
    534.40x = 362,761.19
  5. Step 5: Solve for x
    x = 362,761.19/534.40
  6. Step 6: Final answer
    x = 678.82

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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.