Home / 1,087.90-1,629.45-574.30

Finding the Fourth Proportional to 1,087.90, 1,629.45 and 574.30

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Solution

The fourth proportional to 1,087.90, 1,629.45 and 574.30 is: 860.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,087.90 : 1,629.45 = 574.30 : x
  2. Step 2: Convert to fraction form
    1,087.90/1,629.45 = 574.30/x
  3. Step 3: Cross multiply
    1,087.90x = 1,629.45 × 574.30
  4. Step 4: Simplify right side
    1,087.90x = 935,793.14
  5. Step 5: Solve for x
    x = 935,793.14/1,087.90
  6. Step 6: Final answer
    x = 860.18

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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.