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Finding the Fourth Proportional to 62.88, 93.60 and 60.96

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Solution

The fourth proportional to 62.88, 93.60 and 60.96 is: 90.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    62.88 : 93.60 = 60.96 : x
  2. Step 2: Convert to fraction form
    62.88/93.60 = 60.96/x
  3. Step 3: Cross multiply
    62.88x = 93.60 × 60.96
  4. Step 4: Simplify right side
    62.88x = 5,705.86
  5. Step 5: Solve for x
    x = 5,705.86/62.88
  6. Step 6: Final answer
    x = 90.74

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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.