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Finding the Fourth Proportional to 402.48, 602.34 and 248.34

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Solution

The fourth proportional to 402.48, 602.34 and 248.34 is: 371.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    402.48 : 602.34 = 248.34 : x
  2. Step 2: Convert to fraction form
    402.48/602.34 = 248.34/x
  3. Step 3: Cross multiply
    402.48x = 602.34 × 248.34
  4. Step 4: Simplify right side
    402.48x = 149,585.12
  5. Step 5: Solve for x
    x = 149,585.12/402.48
  6. Step 6: Final answer
    x = 371.66

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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.