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Finding the Fourth Proportional to 148.04, 220.97 and 130.75

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Solution

The fourth proportional to 148.04, 220.97 and 130.75 is: 195.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    148.04 : 220.97 = 130.75 : x
  2. Step 2: Convert to fraction form
    148.04/220.97 = 130.75/x
  3. Step 3: Cross multiply
    148.04x = 220.97 × 130.75
  4. Step 4: Simplify right side
    148.04x = 28,890.62
  5. Step 5: Solve for x
    x = 28,890.62/148.04
  6. Step 6: Final answer
    x = 195.15

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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.