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Finding the Fourth Proportional to 308.34, 424.15 and 270.82

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Solution

The fourth proportional to 308.34, 424.15 and 270.82 is: 372.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    308.34 : 424.15 = 270.82 : x
  2. Step 2: Convert to fraction form
    308.34/424.15 = 270.82/x
  3. Step 3: Cross multiply
    308.34x = 424.15 × 270.82
  4. Step 4: Simplify right side
    308.34x = 114,868.30
  5. Step 5: Solve for x
    x = 114,868.30/308.34
  6. Step 6: Final answer
    x = 372.54

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.