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Finding the Fourth Proportional to 64.31, 95.99 and 59.48

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Solution

The fourth proportional to 64.31, 95.99 and 59.48 is: 88.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    64.31 : 95.99 = 59.48 : x
  2. Step 2: Convert to fraction form
    64.31/95.99 = 59.48/x
  3. Step 3: Cross multiply
    64.31x = 95.99 × 59.48
  4. Step 4: Simplify right side
    64.31x = 5,709.87
  5. Step 5: Solve for x
    x = 5,709.87/64.31
  6. Step 6: Final answer
    x = 88.79

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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.