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Finding the Fourth Proportional to 62.30, 92.78 and 61.59

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Solution

The fourth proportional to 62.30, 92.78 and 61.59 is: 91.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    62.30 : 92.78 = 61.59 : x
  2. Step 2: Convert to fraction form
    62.30/92.78 = 61.59/x
  3. Step 3: Cross multiply
    62.30x = 92.78 × 61.59
  4. Step 4: Simplify right side
    62.30x = 5,713.86
  5. Step 5: Solve for x
    x = 5,713.86/62.30
  6. Step 6: Final answer
    x = 91.72

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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.