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Finding the Fourth Proportional to 59.71, 82.32 and 54.47

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Solution

The fourth proportional to 59.71, 82.32 and 54.47 is: 75.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    59.71 : 82.32 = 54.47 : x
  2. Step 2: Convert to fraction form
    59.71/82.32 = 54.47/x
  3. Step 3: Cross multiply
    59.71x = 82.32 × 54.47
  4. Step 4: Simplify right side
    59.71x = 4,483.97
  5. Step 5: Solve for x
    x = 4,483.97/59.71
  6. Step 6: Final answer
    x = 75.09

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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.