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Finding the Fourth Proportional to 95.29, 131.46 and 64.18

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Solution

The fourth proportional to 95.29, 131.46 and 64.18 is: 88.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    95.29 : 131.46 = 64.18 : x
  2. Step 2: Convert to fraction form
    95.29/131.46 = 64.18/x
  3. Step 3: Cross multiply
    95.29x = 131.46 × 64.18
  4. Step 4: Simplify right side
    95.29x = 8,437.10
  5. Step 5: Solve for x
    x = 8,437.10/95.29
  6. Step 6: Final answer
    x = 88.54

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.