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Finding the Fourth Proportional to 265.48, 397.89 and 149.89

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Solution

The fourth proportional to 265.48, 397.89 and 149.89 is: 224.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    265.48 : 397.89 = 149.89 : x
  2. Step 2: Convert to fraction form
    265.48/397.89 = 149.89/x
  3. Step 3: Cross multiply
    265.48x = 397.89 × 149.89
  4. Step 4: Simplify right side
    265.48x = 59,639.73
  5. Step 5: Solve for x
    x = 59,639.73/265.48
  6. Step 6: Final answer
    x = 224.65

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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.