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Finding the Fourth Proportional to 593.80, 819.40 and 328.20

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Solution

The fourth proportional to 593.80, 819.40 and 328.20 is: 452.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    593.80 : 819.40 = 328.20 : x
  2. Step 2: Convert to fraction form
    593.80/819.40 = 328.20/x
  3. Step 3: Cross multiply
    593.80x = 819.40 × 328.20
  4. Step 4: Simplify right side
    593.80x = 268,927.08
  5. Step 5: Solve for x
    x = 268,927.08/593.80
  6. Step 6: Final answer
    x = 452.89

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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.