Home / 1,156.60-1,734.30-425.92

Finding the Fourth Proportional to 1,156.60, 1,734.30 and 425.92

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Solution

The fourth proportional to 1,156.60, 1,734.30 and 425.92 is: 638.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,156.60 : 1,734.30 = 425.92 : x
  2. Step 2: Convert to fraction form
    1,156.60/1,734.30 = 425.92/x
  3. Step 3: Cross multiply
    1,156.60x = 1,734.30 × 425.92
  4. Step 4: Simplify right side
    1,156.60x = 738,673.06
  5. Step 5: Solve for x
    x = 738,673.06/1,156.60
  6. Step 6: Final answer
    x = 638.66

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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.