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Finding the Fourth Proportional to 834.24, 1,251.84 and 347.20

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Solution

The fourth proportional to 834.24, 1,251.84 and 347.20 is: 521.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    834.24 : 1,251.84 = 347.20 : x
  2. Step 2: Convert to fraction form
    834.24/1,251.84 = 347.20/x
  3. Step 3: Cross multiply
    834.24x = 1,251.84 × 347.20
  4. Step 4: Simplify right side
    834.24x = 434,638.85
  5. Step 5: Solve for x
    x = 434,638.85/834.24
  6. Step 6: Final answer
    x = 521.00

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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.