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Finding the Fourth Proportional to 590.43, 814.71 and 328.45

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Solution

The fourth proportional to 590.43, 814.71 and 328.45 is: 453.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    590.43 : 814.71 = 328.45 : x
  2. Step 2: Convert to fraction form
    590.43/814.71 = 328.45/x
  3. Step 3: Cross multiply
    590.43x = 814.71 × 328.45
  4. Step 4: Simplify right side
    590.43x = 267,591.50
  5. Step 5: Solve for x
    x = 267,591.50/590.43
  6. Step 6: Final answer
    x = 453.21

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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.