Home / 1,229.40-1,844.55-579.65

Finding the Fourth Proportional to 1,229.40, 1,844.55 and 579.65

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Solution

The fourth proportional to 1,229.40, 1,844.55 and 579.65 is: 869.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,229.40 : 1,844.55 = 579.65 : x
  2. Step 2: Convert to fraction form
    1,229.40/1,844.55 = 579.65/x
  3. Step 3: Cross multiply
    1,229.40x = 1,844.55 × 579.65
  4. Step 4: Simplify right side
    1,229.40x = 1,069,184.18
  5. Step 5: Solve for x
    x = 1,069,184.18/1,229.40
  6. Step 6: Final answer
    x = 869.68

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1.5x scale

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.