Home / 1,156.31-1,734.69-425.88

Finding the Fourth Proportional to 1,156.31, 1,734.69 and 425.88

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Solution

The fourth proportional to 1,156.31, 1,734.69 and 425.88 is: 638.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,156.31 : 1,734.69 = 425.88 : x
  2. Step 2: Convert to fraction form
    1,156.31/1,734.69 = 425.88/x
  3. Step 3: Cross multiply
    1,156.31x = 1,734.69 × 425.88
  4. Step 4: Simplify right side
    1,156.31x = 738,769.78
  5. Step 5: Solve for x
    x = 738,769.78/1,156.31
  6. Step 6: Final answer
    x = 638.91

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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.