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Finding the Fourth Proportional to 62.61, 93.12 and 58.80

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Solution

The fourth proportional to 62.61, 93.12 and 58.80 is: 87.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    62.61 : 93.12 = 58.80 : x
  2. Step 2: Convert to fraction form
    62.61/93.12 = 58.80/x
  3. Step 3: Cross multiply
    62.61x = 93.12 × 58.80
  4. Step 4: Simplify right side
    62.61x = 5,475.46
  5. Step 5: Solve for x
    x = 5,475.46/62.61
  6. Step 6: Final answer
    x = 87.45

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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.