Home / 1,225.60-1,839.30-495.70

Finding the Fourth Proportional to 1,225.60, 1,839.30 and 495.70

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Solution

The fourth proportional to 1,225.60, 1,839.30 and 495.70 is: 743.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,225.60 : 1,839.30 = 495.70 : x
  2. Step 2: Convert to fraction form
    1,225.60/1,839.30 = 495.70/x
  3. Step 3: Cross multiply
    1,225.60x = 1,839.30 × 495.70
  4. Step 4: Simplify right side
    1,225.60x = 911,741.01
  5. Step 5: Solve for x
    x = 911,741.01/1,225.60
  6. Step 6: Final answer
    x = 743.91

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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.