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Finding the Fourth Proportional to 64.32, 95.94 and 53.52

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Solution

The fourth proportional to 64.32, 95.94 and 53.52 is: 79.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    64.32 : 95.94 = 53.52 : x
  2. Step 2: Convert to fraction form
    64.32/95.94 = 53.52/x
  3. Step 3: Cross multiply
    64.32x = 95.94 × 53.52
  4. Step 4: Simplify right side
    64.32x = 5,134.71
  5. Step 5: Solve for x
    x = 5,134.71/64.32
  6. Step 6: Final answer
    x = 79.83

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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.