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Finding the Fourth Proportional to 590.36, 814.65 and 328.39

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Solution

The fourth proportional to 590.36, 814.65 and 328.39 is: 453.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    590.36 : 814.65 = 328.39 : x
  2. Step 2: Convert to fraction form
    590.36/814.65 = 328.39/x
  3. Step 3: Cross multiply
    590.36x = 814.65 × 328.39
  4. Step 4: Simplify right side
    590.36x = 267,521.27
  5. Step 5: Solve for x
    x = 267,521.27/590.36
  6. Step 6: Final answer
    x = 453.15

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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.