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Finding the Fourth Proportional to 402.04, 602.74 and 280.44

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Solution

The fourth proportional to 402.04, 602.74 and 280.44 is: 420.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    402.04 : 602.74 = 280.44 : x
  2. Step 2: Convert to fraction form
    402.04/602.74 = 280.44/x
  3. Step 3: Cross multiply
    402.04x = 602.74 × 280.44
  4. Step 4: Simplify right side
    402.04x = 169,032.41
  5. Step 5: Solve for x
    x = 169,032.41/402.04
  6. Step 6: Final answer
    x = 420.44

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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.