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Finding the Fourth Proportional to 64.91, 97.47 and 62.84

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Solution

The fourth proportional to 64.91, 97.47 and 62.84 is: 94.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    64.91 : 97.47 = 62.84 : x
  2. Step 2: Convert to fraction form
    64.91/97.47 = 62.84/x
  3. Step 3: Cross multiply
    64.91x = 97.47 × 62.84
  4. Step 4: Simplify right side
    64.91x = 6,124.21
  5. Step 5: Solve for x
    x = 6,124.21/64.91
  6. Step 6: Final answer
    x = 94.36

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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.