Home / 1,049.02-1,573.48-318.55

Finding the Fourth Proportional to 1,049.02, 1,573.48 and 318.55

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Solution

The fourth proportional to 1,049.02, 1,573.48 and 318.55 is: 477.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,049.02 : 1,573.48 = 318.55 : x
  2. Step 2: Convert to fraction form
    1,049.02/1,573.48 = 318.55/x
  3. Step 3: Cross multiply
    1,049.02x = 1,573.48 × 318.55
  4. Step 4: Simplify right side
    1,049.02x = 501,229.68
  5. Step 5: Solve for x
    x = 501,229.68/1,049.02
  6. Step 6: Final answer
    x = 477.81

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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.