Home / 1,315.50-1,973.25-449.88

Finding the Fourth Proportional to 1,315.50, 1,973.25 and 449.88

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Solution

The fourth proportional to 1,315.50, 1,973.25 and 449.88 is: 674.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,315.50 : 1,973.25 = 449.88 : x
  2. Step 2: Convert to fraction form
    1,315.50/1,973.25 = 449.88/x
  3. Step 3: Cross multiply
    1,315.50x = 1,973.25 × 449.88
  4. Step 4: Simplify right side
    1,315.50x = 887,725.71
  5. Step 5: Solve for x
    x = 887,725.71/1,315.50
  6. Step 6: Final answer
    x = 674.82

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Double scale
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Similar ratio
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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.