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Finding the Fourth Proportional to 146.62, 220.29 and 137.98

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Solution

The fourth proportional to 146.62, 220.29 and 137.98 is: 207.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    146.62 : 220.29 = 137.98 : x
  2. Step 2: Convert to fraction form
    146.62/220.29 = 137.98/x
  3. Step 3: Cross multiply
    146.62x = 220.29 × 137.98
  4. Step 4: Simplify right side
    146.62x = 30,395.61
  5. Step 5: Solve for x
    x = 30,395.61/146.62
  6. Step 6: Final answer
    x = 207.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.