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Finding the Fourth Proportional to 1,469.19, 2,203.18 and 545.49

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Solution

The fourth proportional to 1,469.19, 2,203.18 and 545.49 is: 818.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,469.19 : 2,203.18 = 545.49 : x
  2. Step 2: Convert to fraction form
    1,469.19/2,203.18 = 545.49/x
  3. Step 3: Cross multiply
    1,469.19x = 2,203.18 × 545.49
  4. Step 4: Simplify right side
    1,469.19x = 1,201,812.66
  5. Step 5: Solve for x
    x = 1,201,812.66/1,469.19
  6. Step 6: Final answer
    x = 818.01

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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.