Home / 1,451.11-2,176.43-477.20

Finding the Fourth Proportional to 1,451.11, 2,176.43 and 477.20

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Solution

The fourth proportional to 1,451.11, 2,176.43 and 477.20 is: 715.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,451.11 : 2,176.43 = 477.20 : x
  2. Step 2: Convert to fraction form
    1,451.11/2,176.43 = 477.20/x
  3. Step 3: Cross multiply
    1,451.11x = 2,176.43 × 477.20
  4. Step 4: Simplify right side
    1,451.11x = 1,038,593.59
  5. Step 5: Solve for x
    x = 1,038,593.59/1,451.11
  6. Step 6: Final answer
    x = 715.73

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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.