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Finding the Fourth Proportional to 65.26, 89.66 and 62.38

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Solution

The fourth proportional to 65.26, 89.66 and 62.38 is: 85.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    65.26 : 89.66 = 62.38 : x
  2. Step 2: Convert to fraction form
    65.26/89.66 = 62.38/x
  3. Step 3: Cross multiply
    65.26x = 89.66 × 62.38
  4. Step 4: Simplify right side
    65.26x = 5,592.99
  5. Step 5: Solve for x
    x = 5,592.99/65.26
  6. Step 6: Final answer
    x = 85.70

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.