Home / 1,034.20-1,551.30-458.20

Finding the Fourth Proportional to 1,034.20, 1,551.30 and 458.20

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Solution

The fourth proportional to 1,034.20, 1,551.30 and 458.20 is: 687.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,034.20 : 1,551.30 = 458.20 : x
  2. Step 2: Convert to fraction form
    1,034.20/1,551.30 = 458.20/x
  3. Step 3: Cross multiply
    1,034.20x = 1,551.30 × 458.20
  4. Step 4: Simplify right side
    1,034.20x = 710,805.66
  5. Step 5: Solve for x
    x = 710,805.66/1,034.20
  6. Step 6: Final answer
    x = 687.30

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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.