Home / 1,471.50-2,207.09-431.51

Finding the Fourth Proportional to 1,471.50, 2,207.09 and 431.51

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Solution

The fourth proportional to 1,471.50, 2,207.09 and 431.51 is: 647.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,471.50 : 2,207.09 = 431.51 : x
  2. Step 2: Convert to fraction form
    1,471.50/2,207.09 = 431.51/x
  3. Step 3: Cross multiply
    1,471.50x = 2,207.09 × 431.51
  4. Step 4: Simplify right side
    1,471.50x = 952,381.44
  5. Step 5: Solve for x
    x = 952,381.44/1,471.50
  6. Step 6: Final answer
    x = 647.22

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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.