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Finding the Fourth Proportional to 543.80, 814.38 and 269.51

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Solution

The fourth proportional to 543.80, 814.38 and 269.51 is: 403.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    543.80 : 814.38 = 269.51 : x
  2. Step 2: Convert to fraction form
    543.80/814.38 = 269.51/x
  3. Step 3: Cross multiply
    543.80x = 814.38 × 269.51
  4. Step 4: Simplify right side
    543.80x = 219,479.48
  5. Step 5: Solve for x
    x = 219,479.48/543.80
  6. Step 6: Final answer
    x = 403.61

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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.