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Finding the Fourth Proportional to 402.78, 604.98 and 294.24

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Solution

The fourth proportional to 402.78, 604.98 and 294.24 is: 441.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    402.78 : 604.98 = 294.24 : x
  2. Step 2: Convert to fraction form
    402.78/604.98 = 294.24/x
  3. Step 3: Cross multiply
    402.78x = 604.98 × 294.24
  4. Step 4: Simplify right side
    402.78x = 178,009.32
  5. Step 5: Solve for x
    x = 178,009.32/402.78
  6. Step 6: Final answer
    x = 441.95

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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.