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Finding the Fourth Proportional to 148.24, 220.70 and 147.52

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Solution

The fourth proportional to 148.24, 220.70 and 147.52 is: 219.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    148.24 : 220.70 = 147.52 : x
  2. Step 2: Convert to fraction form
    148.24/220.70 = 147.52/x
  3. Step 3: Cross multiply
    148.24x = 220.70 × 147.52
  4. Step 4: Simplify right side
    148.24x = 32,557.66
  5. Step 5: Solve for x
    x = 32,557.66/148.24
  6. Step 6: Final answer
    x = 219.63

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.