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Finding the Fourth Proportional to 232.50, 348.75 and 80.50

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Solution

The fourth proportional to 232.50, 348.75 and 80.50 is: 120.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    232.50 : 348.75 = 80.50 : x
  2. Step 2: Convert to fraction form
    232.50/348.75 = 80.50/x
  3. Step 3: Cross multiply
    232.50x = 348.75 × 80.50
  4. Step 4: Simplify right side
    232.50x = 28,074.38
  5. Step 5: Solve for x
    x = 28,074.38/232.50
  6. Step 6: Final answer
    x = 120.75

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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.