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Finding the Fourth Proportional to 674.68, 1,011.34 and 537.96

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Solution

The fourth proportional to 674.68, 1,011.34 and 537.96 is: 806.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    674.68 : 1,011.34 = 537.96 : x
  2. Step 2: Convert to fraction form
    674.68/1,011.34 = 537.96/x
  3. Step 3: Cross multiply
    674.68x = 1,011.34 × 537.96
  4. Step 4: Simplify right side
    674.68x = 544,060.47
  5. Step 5: Solve for x
    x = 544,060.47/674.68
  6. Step 6: Final answer
    x = 806.40

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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.