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Finding the Fourth Proportional to 818.32, 1,227.51 and 241.18

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Solution

The fourth proportional to 818.32, 1,227.51 and 241.18 is: 361.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    818.32 : 1,227.51 = 241.18 : x
  2. Step 2: Convert to fraction form
    818.32/1,227.51 = 241.18/x
  3. Step 3: Cross multiply
    818.32x = 1,227.51 × 241.18
  4. Step 4: Simplify right side
    818.32x = 296,050.86
  5. Step 5: Solve for x
    x = 296,050.86/818.32
  6. Step 6: Final answer
    x = 361.78

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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.