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Finding the Fourth Proportional to 937.34, 1,403.85 and 525.86

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Solution

The fourth proportional to 937.34, 1,403.85 and 525.86 is: 787.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    937.34 : 1,403.85 = 525.86 : x
  2. Step 2: Convert to fraction form
    937.34/1,403.85 = 525.86/x
  3. Step 3: Cross multiply
    937.34x = 1,403.85 × 525.86
  4. Step 4: Simplify right side
    937.34x = 738,228.56
  5. Step 5: Solve for x
    x = 738,228.56/937.34
  6. Step 6: Final answer
    x = 787.58

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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.