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Finding the Fourth Proportional to 148.23, 223.42 and 135.90

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Solution

The fourth proportional to 148.23, 223.42 and 135.90 is: 204.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    148.23 : 223.42 = 135.90 : x
  2. Step 2: Convert to fraction form
    148.23/223.42 = 135.90/x
  3. Step 3: Cross multiply
    148.23x = 223.42 × 135.90
  4. Step 4: Simplify right side
    148.23x = 30,362.78
  5. Step 5: Solve for x
    x = 30,362.78/148.23
  6. Step 6: Final answer
    x = 204.84

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.