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Finding the Fourth Proportional to 392.82, 544.57 and 372.01

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Solution

The fourth proportional to 392.82, 544.57 and 372.01 is: 515.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    392.82 : 544.57 = 372.01 : x
  2. Step 2: Convert to fraction form
    392.82/544.57 = 372.01/x
  3. Step 3: Cross multiply
    392.82x = 544.57 × 372.01
  4. Step 4: Simplify right side
    392.82x = 202,585.49
  5. Step 5: Solve for x
    x = 202,585.49/392.82
  6. Step 6: Final answer
    x = 515.72

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.