Home / 1,471.44-2,207.09-431.40

Finding the Fourth Proportional to 1,471.44, 2,207.09 and 431.40

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Solution

The fourth proportional to 1,471.44, 2,207.09 and 431.40 is: 647.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,471.44 : 2,207.09 = 431.40 : x
  2. Step 2: Convert to fraction form
    1,471.44/2,207.09 = 431.40/x
  3. Step 3: Cross multiply
    1,471.44x = 2,207.09 × 431.40
  4. Step 4: Simplify right side
    1,471.44x = 952,139.70
  5. Step 5: Solve for x
    x = 952,139.70/1,471.44
  6. Step 6: Final answer
    x = 647.08

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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.