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Finding the Fourth Proportional to 148.85, 204.30 and 136.54

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Solution

The fourth proportional to 148.85, 204.30 and 136.54 is: 187.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    148.85 : 204.30 = 136.54 : x
  2. Step 2: Convert to fraction form
    148.85/204.30 = 136.54/x
  3. Step 3: Cross multiply
    148.85x = 204.30 × 136.54
  4. Step 4: Simplify right side
    148.85x = 27,895.12
  5. Step 5: Solve for x
    x = 27,895.12/148.85
  6. Step 6: Final answer
    x = 187.40

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.