Home / 1,447.01-2,170.50-459.92

Finding the Fourth Proportional to 1,447.01, 2,170.50 and 459.92

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Solution

The fourth proportional to 1,447.01, 2,170.50 and 459.92 is: 689.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,447.01 : 2,170.50 = 459.92 : x
  2. Step 2: Convert to fraction form
    1,447.01/2,170.50 = 459.92/x
  3. Step 3: Cross multiply
    1,447.01x = 2,170.50 × 459.92
  4. Step 4: Simplify right side
    1,447.01x = 998,245.51
  5. Step 5: Solve for x
    x = 998,245.51/1,447.01
  6. Step 6: Final answer
    x = 689.87

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Double scale
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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.