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Finding the Fourth Proportional to 543.79, 814.53 and 269.69

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Solution

The fourth proportional to 543.79, 814.53 and 269.69 is: 403.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    543.79 : 814.53 = 269.69 : x
  2. Step 2: Convert to fraction form
    543.79/814.53 = 269.69/x
  3. Step 3: Cross multiply
    543.79x = 814.53 × 269.69
  4. Step 4: Simplify right side
    543.79x = 219,670.60
  5. Step 5: Solve for x
    x = 219,670.60/543.79
  6. Step 6: Final answer
    x = 403.97

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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.