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Finding the Fourth Proportional to 534.20, 796.80 and 487.04

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Solution

The fourth proportional to 534.20, 796.80 and 487.04 is: 726.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    534.20 : 796.80 = 487.04 : x
  2. Step 2: Convert to fraction form
    534.20/796.80 = 487.04/x
  3. Step 3: Cross multiply
    534.20x = 796.80 × 487.04
  4. Step 4: Simplify right side
    534.20x = 388,071.04
  5. Step 5: Solve for x
    x = 388,071.04/534.20
  6. Step 6: Final answer
    x = 726.45

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Double scale
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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.