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Finding the Fourth Proportional to 392.68, 538.01 and 363.64

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Solution

The fourth proportional to 392.68, 538.01 and 363.64 is: 498.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    392.68 : 538.01 = 363.64 : x
  2. Step 2: Convert to fraction form
    392.68/538.01 = 363.64/x
  3. Step 3: Cross multiply
    392.68x = 538.01 × 363.64
  4. Step 4: Simplify right side
    392.68x = 195,641.96
  5. Step 5: Solve for x
    x = 195,641.96/392.68
  6. Step 6: Final answer
    x = 498.22

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.