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Finding the Fourth Proportional to 95.99, 132.50 and 64.90

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Solution

The fourth proportional to 95.99, 132.50 and 64.90 is: 89.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    95.99 : 132.50 = 64.90 : x
  2. Step 2: Convert to fraction form
    95.99/132.50 = 64.90/x
  3. Step 3: Cross multiply
    95.99x = 132.50 × 64.90
  4. Step 4: Simplify right side
    95.99x = 8,599.25
  5. Step 5: Solve for x
    x = 8,599.25/95.99
  6. Step 6: Final answer
    x = 89.58

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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.