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Finding the Fourth Proportional to 590.17, 814.42 and 328.21

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Solution

The fourth proportional to 590.17, 814.42 and 328.21 is: 452.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    590.17 : 814.42 = 328.21 : x
  2. Step 2: Convert to fraction form
    590.17/814.42 = 328.21/x
  3. Step 3: Cross multiply
    590.17x = 814.42 × 328.21
  4. Step 4: Simplify right side
    590.17x = 267,300.79
  5. Step 5: Solve for x
    x = 267,300.79/590.17
  6. Step 6: Final answer
    x = 452.92

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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.