Home / 1,049.10-1,573.46-391.28

Finding the Fourth Proportional to 1,049.10, 1,573.46 and 391.28

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Solution

The fourth proportional to 1,049.10, 1,573.46 and 391.28 is: 586.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,049.10 : 1,573.46 = 391.28 : x
  2. Step 2: Convert to fraction form
    1,049.10/1,573.46 = 391.28/x
  3. Step 3: Cross multiply
    1,049.10x = 1,573.46 × 391.28
  4. Step 4: Simplify right side
    1,049.10x = 615,653.61
  5. Step 5: Solve for x
    x = 615,653.61/1,049.10
  6. Step 6: Final answer
    x = 586.84

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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.