Home / 1,301.20-1,951.60-423.59

Finding the Fourth Proportional to 1,301.20, 1,951.60 and 423.59

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Solution

The fourth proportional to 1,301.20, 1,951.60 and 423.59 is: 635.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,301.20 : 1,951.60 = 423.59 : x
  2. Step 2: Convert to fraction form
    1,301.20/1,951.60 = 423.59/x
  3. Step 3: Cross multiply
    1,301.20x = 1,951.60 × 423.59
  4. Step 4: Simplify right side
    1,301.20x = 826,678.24
  5. Step 5: Solve for x
    x = 826,678.24/1,301.20
  6. Step 6: Final answer
    x = 635.32

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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.