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Finding the Fourth Proportional to 392.08, 539.83 and 332.94

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Solution

The fourth proportional to 392.08, 539.83 and 332.94 is: 458.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    392.08 : 539.83 = 332.94 : x
  2. Step 2: Convert to fraction form
    392.08/539.83 = 332.94/x
  3. Step 3: Cross multiply
    392.08x = 539.83 × 332.94
  4. Step 4: Simplify right side
    392.08x = 179,728.30
  5. Step 5: Solve for x
    x = 179,728.30/392.08
  6. Step 6: Final answer
    x = 458.40

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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.