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Finding the Fourth Proportional to 232.50, 348.57 and 145.71

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Solution

The fourth proportional to 232.50, 348.57 and 145.71 is: 218.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    232.50 : 348.57 = 145.71 : x
  2. Step 2: Convert to fraction form
    232.50/348.57 = 145.71/x
  3. Step 3: Cross multiply
    232.50x = 348.57 × 145.71
  4. Step 4: Simplify right side
    232.50x = 50,790.13
  5. Step 5: Solve for x
    x = 50,790.13/232.50
  6. Step 6: Final answer
    x = 218.45

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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.