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Finding the Fourth Proportional to 593.04, 817.81 and 393.72

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Solution

The fourth proportional to 593.04, 817.81 and 393.72 is: 542.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    593.04 : 817.81 = 393.72 : x
  2. Step 2: Convert to fraction form
    593.04/817.81 = 393.72/x
  3. Step 3: Cross multiply
    593.04x = 817.81 × 393.72
  4. Step 4: Simplify right side
    593.04x = 321,988.15
  5. Step 5: Solve for x
    x = 321,988.15/593.04
  6. Step 6: Final answer
    x = 542.95

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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.