Home / 1,407.38-2,110.80-433.22

Finding the Fourth Proportional to 1,407.38, 2,110.80 and 433.22

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Solution

The fourth proportional to 1,407.38, 2,110.80 and 433.22 is: 649.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,407.38 : 2,110.80 = 433.22 : x
  2. Step 2: Convert to fraction form
    1,407.38/2,110.80 = 433.22/x
  3. Step 3: Cross multiply
    1,407.38x = 2,110.80 × 433.22
  4. Step 4: Simplify right side
    1,407.38x = 914,440.78
  5. Step 5: Solve for x
    x = 914,440.78/1,407.38
  6. Step 6: Final answer
    x = 649.75

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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.