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Finding the Fourth Proportional to 232.80, 348.48 and 147.36

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Solution

The fourth proportional to 232.80, 348.48 and 147.36 is: 220.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    232.80 : 348.48 = 147.36 : x
  2. Step 2: Convert to fraction form
    232.80/348.48 = 147.36/x
  3. Step 3: Cross multiply
    232.80x = 348.48 × 147.36
  4. Step 4: Simplify right side
    232.80x = 51,352.01
  5. Step 5: Solve for x
    x = 51,352.01/232.80
  6. Step 6: Final answer
    x = 220.58

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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.