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Finding the Fourth Proportional to 828.32, 1,241.82 and 714.11

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Solution

The fourth proportional to 828.32, 1,241.82 and 714.11 is: 1,070.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    828.32 : 1,241.82 = 714.11 : x
  2. Step 2: Convert to fraction form
    828.32/1,241.82 = 714.11/x
  3. Step 3: Cross multiply
    828.32x = 1,241.82 × 714.11
  4. Step 4: Simplify right side
    828.32x = 886,789.87
  5. Step 5: Solve for x
    x = 886,789.87/828.32
  6. Step 6: Final answer
    x = 1,070.59

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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.