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Finding the Fourth Proportional to 146.78, 220.25 and 60.10

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Solution

The fourth proportional to 146.78, 220.25 and 60.10 is: 90.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    146.78 : 220.25 = 60.10 : x
  2. Step 2: Convert to fraction form
    146.78/220.25 = 60.10/x
  3. Step 3: Cross multiply
    146.78x = 220.25 × 60.10
  4. Step 4: Simplify right side
    146.78x = 13,237.03
  5. Step 5: Solve for x
    x = 13,237.03/146.78
  6. Step 6: Final answer
    x = 90.18

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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.