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Finding the Fourth Proportional to 402.30, 602.98 and 185.42

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Solution

The fourth proportional to 402.30, 602.98 and 185.42 is: 277.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    402.30 : 602.98 = 185.42 : x
  2. Step 2: Convert to fraction form
    402.30/602.98 = 185.42/x
  3. Step 3: Cross multiply
    402.30x = 602.98 × 185.42
  4. Step 4: Simplify right side
    402.30x = 111,805.60
  5. Step 5: Solve for x
    x = 111,805.60/402.30
  6. Step 6: Final answer
    x = 277.92

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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.