Home / 1,301.20-1,951.40-435.31

Finding the Fourth Proportional to 1,301.20, 1,951.40 and 435.31

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Solution

The fourth proportional to 1,301.20, 1,951.40 and 435.31 is: 652.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,301.20 : 1,951.40 = 435.31 : x
  2. Step 2: Convert to fraction form
    1,301.20/1,951.40 = 435.31/x
  3. Step 3: Cross multiply
    1,301.20x = 1,951.40 × 435.31
  4. Step 4: Simplify right side
    1,301.20x = 849,463.93
  5. Step 5: Solve for x
    x = 849,463.93/1,301.20
  6. Step 6: Final answer
    x = 652.83

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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.