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Finding the Fourth Proportional to 605.60, 908.38 and 280.52

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Solution

The fourth proportional to 605.60, 908.38 and 280.52 is: 420.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    605.60 : 908.38 = 280.52 : x
  2. Step 2: Convert to fraction form
    605.60/908.38 = 280.52/x
  3. Step 3: Cross multiply
    605.60x = 908.38 × 280.52
  4. Step 4: Simplify right side
    605.60x = 254,818.76
  5. Step 5: Solve for x
    x = 254,818.76/605.60
  6. Step 6: Final answer
    x = 420.77

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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.