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Finding the Fourth Proportional to 534.45, 736.65 and 487.98

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Solution

The fourth proportional to 534.45, 736.65 and 487.98 is: 672.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    534.45 : 736.65 = 487.98 : x
  2. Step 2: Convert to fraction form
    534.45/736.65 = 487.98/x
  3. Step 3: Cross multiply
    534.45x = 736.65 × 487.98
  4. Step 4: Simplify right side
    534.45x = 359,470.47
  5. Step 5: Solve for x
    x = 359,470.47/534.45
  6. Step 6: Final answer
    x = 672.60

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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.