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Finding the Fourth Proportional to 541.66, 812.22 and 281.65

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Solution

The fourth proportional to 541.66, 812.22 and 281.65 is: 422.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    541.66 : 812.22 = 281.65 : x
  2. Step 2: Convert to fraction form
    541.66/812.22 = 281.65/x
  3. Step 3: Cross multiply
    541.66x = 812.22 × 281.65
  4. Step 4: Simplify right side
    541.66x = 228,761.76
  5. Step 5: Solve for x
    x = 228,761.76/541.66
  6. Step 6: Final answer
    x = 422.33

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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.