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Finding the Fourth Proportional to 66.08, 97.99 and 65.17

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Solution

The fourth proportional to 66.08, 97.99 and 65.17 is: 96.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    66.08 : 97.99 = 65.17 : x
  2. Step 2: Convert to fraction form
    66.08/97.99 = 65.17/x
  3. Step 3: Cross multiply
    66.08x = 97.99 × 65.17
  4. Step 4: Simplify right side
    66.08x = 6,385.19
  5. Step 5: Solve for x
    x = 6,385.19/66.08
  6. Step 6: Final answer
    x = 96.64

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Why These Related Problems?

These problems maintain the same ratio (1.48) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.