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Finding the Fourth Proportional to 341.54, 511.92 and 146.70

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Solution

The fourth proportional to 341.54, 511.92 and 146.70 is: 219.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    341.54 : 511.92 = 146.70 : x
  2. Step 2: Convert to fraction form
    341.54/511.92 = 146.70/x
  3. Step 3: Cross multiply
    341.54x = 511.92 × 146.70
  4. Step 4: Simplify right side
    341.54x = 75,098.66
  5. Step 5: Solve for x
    x = 75,098.66/341.54
  6. Step 6: Final answer
    x = 219.89

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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.