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Finding the Fourth Proportional to 148.77, 221.47 and 147.96

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Solution

The fourth proportional to 148.77, 221.47 and 147.96 is: 220.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    148.77 : 221.47 = 147.96 : x
  2. Step 2: Convert to fraction form
    148.77/221.47 = 147.96/x
  3. Step 3: Cross multiply
    148.77x = 221.47 × 147.96
  4. Step 4: Simplify right side
    148.77x = 32,768.33
  5. Step 5: Solve for x
    x = 32,768.33/148.77
  6. Step 6: Final answer
    x = 220.26

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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.