Home / 1,669.80-2,505.30-574.20

Finding the Fourth Proportional to 1,669.80, 2,505.30 and 574.20

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Solution

The fourth proportional to 1,669.80, 2,505.30 and 574.20 is: 861.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,669.80 : 2,505.30 = 574.20 : x
  2. Step 2: Convert to fraction form
    1,669.80/2,505.30 = 574.20/x
  3. Step 3: Cross multiply
    1,669.80x = 2,505.30 × 574.20
  4. Step 4: Simplify right side
    1,669.80x = 1,438,543.26
  5. Step 5: Solve for x
    x = 1,438,543.26/1,669.80
  6. Step 6: Final answer
    x = 861.51

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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.