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Finding the Fourth Proportional to 541.82, 812.38 and 281.92

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Solution

The fourth proportional to 541.82, 812.38 and 281.92 is: 422.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    541.82 : 812.38 = 281.92 : x
  2. Step 2: Convert to fraction form
    541.82/812.38 = 281.92/x
  3. Step 3: Cross multiply
    541.82x = 812.38 × 281.92
  4. Step 4: Simplify right side
    541.82x = 229,026.17
  5. Step 5: Solve for x
    x = 229,026.17/541.82
  6. Step 6: Final answer
    x = 422.70

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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.