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Finding the Fourth Proportional to 967.29, 1,334.87 and 525.20

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Solution

The fourth proportional to 967.29, 1,334.87 and 525.20 is: 724.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    967.29 : 1,334.87 = 525.20 : x
  2. Step 2: Convert to fraction form
    967.29/1,334.87 = 525.20/x
  3. Step 3: Cross multiply
    967.29x = 1,334.87 × 525.20
  4. Step 4: Simplify right side
    967.29x = 701,070.39
  5. Step 5: Solve for x
    x = 701,070.39/967.29
  6. Step 6: Final answer
    x = 724.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.