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Finding the Fourth Proportional to 2,007.11, 3,010.30 and 545.94

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Solution

The fourth proportional to 2,007.11, 3,010.30 and 545.94 is: 818.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,007.11 : 3,010.30 = 545.94 : x
  2. Step 2: Convert to fraction form
    2,007.11/3,010.30 = 545.94/x
  3. Step 3: Cross multiply
    2,007.11x = 3,010.30 × 545.94
  4. Step 4: Simplify right side
    2,007.11x = 1,643,441.82
  5. Step 5: Solve for x
    x = 1,643,441.82/2,007.11
  6. Step 6: Final answer
    x = 818.81

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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.