Home / 1,156.55-1,734.66-425.96

Finding the Fourth Proportional to 1,156.55, 1,734.66 and 425.96

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Solution

The fourth proportional to 1,156.55, 1,734.66 and 425.96 is: 638.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,156.55 : 1,734.66 = 425.96 : x
  2. Step 2: Convert to fraction form
    1,156.55/1,734.66 = 425.96/x
  3. Step 3: Cross multiply
    1,156.55x = 1,734.66 × 425.96
  4. Step 4: Simplify right side
    1,156.55x = 738,889.31
  5. Step 5: Solve for x
    x = 738,889.31/1,156.55
  6. Step 6: Final answer
    x = 638.87

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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.