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Finding the Fourth Proportional to 117.43, 175.92 and 65.92

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Solution

The fourth proportional to 117.43, 175.92 and 65.92 is: 98.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    117.43 : 175.92 = 65.92 : x
  2. Step 2: Convert to fraction form
    117.43/175.92 = 65.92/x
  3. Step 3: Cross multiply
    117.43x = 175.92 × 65.92
  4. Step 4: Simplify right side
    117.43x = 11,595.98
  5. Step 5: Solve for x
    x = 11,595.98/117.43
  6. Step 6: Final answer
    x = 98.75

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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.