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Finding the Fourth Proportional to 148.65, 221.97 and 130.23

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Solution

The fourth proportional to 148.65, 221.97 and 130.23 is: 194.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    148.65 : 221.97 = 130.23 : x
  2. Step 2: Convert to fraction form
    148.65/221.97 = 130.23/x
  3. Step 3: Cross multiply
    148.65x = 221.97 × 130.23
  4. Step 4: Simplify right side
    148.65x = 28,907.15
  5. Step 5: Solve for x
    x = 28,907.15/148.65
  6. Step 6: Final answer
    x = 194.46

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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.