Home / 1,156.49-1,734.56-425.90

Finding the Fourth Proportional to 1,156.49, 1,734.56 and 425.90

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Solution

The fourth proportional to 1,156.49, 1,734.56 and 425.90 is: 638.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,156.49 : 1,734.56 = 425.90 : x
  2. Step 2: Convert to fraction form
    1,156.49/1,734.56 = 425.90/x
  3. Step 3: Cross multiply
    1,156.49x = 1,734.56 × 425.90
  4. Step 4: Simplify right side
    1,156.49x = 738,741.50
  5. Step 5: Solve for x
    x = 738,741.50/1,156.49
  6. Step 6: Final answer
    x = 638.78

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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.