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Finding the Fourth Proportional to 539.76, 809.16 and 282.96

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Solution

The fourth proportional to 539.76, 809.16 and 282.96 is: 424.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    539.76 : 809.16 = 282.96 : x
  2. Step 2: Convert to fraction form
    539.76/809.16 = 282.96/x
  3. Step 3: Cross multiply
    539.76x = 809.16 × 282.96
  4. Step 4: Simplify right side
    539.76x = 228,959.91
  5. Step 5: Solve for x
    x = 228,959.91/539.76
  6. Step 6: Final answer
    x = 424.19

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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.