Home / 1,155.90-1,733.58-425.55

Finding the Fourth Proportional to 1,155.90, 1,733.58 and 425.55

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Solution

The fourth proportional to 1,155.90, 1,733.58 and 425.55 is: 638.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,155.90 : 1,733.58 = 425.55 : x
  2. Step 2: Convert to fraction form
    1,155.90/1,733.58 = 425.55/x
  3. Step 3: Cross multiply
    1,155.90x = 1,733.58 × 425.55
  4. Step 4: Simplify right side
    1,155.90x = 737,724.97
  5. Step 5: Solve for x
    x = 737,724.97/1,155.90
  6. Step 6: Final answer
    x = 638.23

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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.