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Finding the Fourth Proportional to 64.49, 96.82 and 41.71

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Solution

The fourth proportional to 64.49, 96.82 and 41.71 is: 62.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    64.49 : 96.82 = 41.71 : x
  2. Step 2: Convert to fraction form
    64.49/96.82 = 41.71/x
  3. Step 3: Cross multiply
    64.49x = 96.82 × 41.71
  4. Step 4: Simplify right side
    64.49x = 4,038.36
  5. Step 5: Solve for x
    x = 4,038.36/64.49
  6. Step 6: Final answer
    x = 62.62

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.