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Finding the Fourth Proportional to 65.52, 97.78 and 63.76

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Solution

The fourth proportional to 65.52, 97.78 and 63.76 is: 95.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    65.52 : 97.78 = 63.76 : x
  2. Step 2: Convert to fraction form
    65.52/97.78 = 63.76/x
  3. Step 3: Cross multiply
    65.52x = 97.78 × 63.76
  4. Step 4: Simplify right side
    65.52x = 6,234.45
  5. Step 5: Solve for x
    x = 6,234.45/65.52
  6. Step 6: Final answer
    x = 95.15

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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.