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Finding the Fourth Proportional to 590.38, 814.74 and 328.42

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Solution

The fourth proportional to 590.38, 814.74 and 328.42 is: 453.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    590.38 : 814.74 = 328.42 : x
  2. Step 2: Convert to fraction form
    590.38/814.74 = 328.42/x
  3. Step 3: Cross multiply
    590.38x = 814.74 × 328.42
  4. Step 4: Simplify right side
    590.38x = 267,576.91
  5. Step 5: Solve for x
    x = 267,576.91/590.38
  6. Step 6: Final answer
    x = 453.23

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.