Home / 1,518.72-2,278.20-545.04

Finding the Fourth Proportional to 1,518.72, 2,278.20 and 545.04

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Solution

The fourth proportional to 1,518.72, 2,278.20 and 545.04 is: 817.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,518.72 : 2,278.20 = 545.04 : x
  2. Step 2: Convert to fraction form
    1,518.72/2,278.20 = 545.04/x
  3. Step 3: Cross multiply
    1,518.72x = 2,278.20 × 545.04
  4. Step 4: Simplify right side
    1,518.72x = 1,241,710.13
  5. Step 5: Solve for x
    x = 1,241,710.13/1,518.72
  6. Step 6: Final answer
    x = 817.60

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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.