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Finding the Fourth Proportional to 66.60, 92.02 and 62.54

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Solution

The fourth proportional to 66.60, 92.02 and 62.54 is: 86.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    66.60 : 92.02 = 62.54 : x
  2. Step 2: Convert to fraction form
    66.60/92.02 = 62.54/x
  3. Step 3: Cross multiply
    66.60x = 92.02 × 62.54
  4. Step 4: Simplify right side
    66.60x = 5,754.93
  5. Step 5: Solve for x
    x = 5,754.93/66.60
  6. Step 6: Final answer
    x = 86.41

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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.