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Finding the Fourth Proportional to 1,451.07, 2,176.96 and 425.07

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Solution

The fourth proportional to 1,451.07, 2,176.96 and 425.07 is: 637.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,451.07 : 2,176.96 = 425.07 : x
  2. Step 2: Convert to fraction form
    1,451.07/2,176.96 = 425.07/x
  3. Step 3: Cross multiply
    1,451.07x = 2,176.96 × 425.07
  4. Step 4: Simplify right side
    1,451.07x = 925,360.39
  5. Step 5: Solve for x
    x = 925,360.39/1,451.07
  6. Step 6: Final answer
    x = 637.71

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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.