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Finding the Fourth Proportional to 65.64, 98.07 and 63.66

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Solution

The fourth proportional to 65.64, 98.07 and 63.66 is: 95.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    65.64 : 98.07 = 63.66 : x
  2. Step 2: Convert to fraction form
    65.64/98.07 = 63.66/x
  3. Step 3: Cross multiply
    65.64x = 98.07 × 63.66
  4. Step 4: Simplify right side
    65.64x = 6,243.14
  5. Step 5: Solve for x
    x = 6,243.14/65.64
  6. Step 6: Final answer
    x = 95.11

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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.