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Finding the Fourth Proportional to 148.98, 222.20 and 146.55

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Solution

The fourth proportional to 148.98, 222.20 and 146.55 is: 218.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    148.98 : 222.20 = 146.55 : x
  2. Step 2: Convert to fraction form
    148.98/222.20 = 146.55/x
  3. Step 3: Cross multiply
    148.98x = 222.20 × 146.55
  4. Step 4: Simplify right side
    148.98x = 32,562.68
  5. Step 5: Solve for x
    x = 32,562.68/148.98
  6. Step 6: Final answer
    x = 218.57

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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.