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Finding the Fourth Proportional to 392.01, 540.99 and 217.37

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Solution

The fourth proportional to 392.01, 540.99 and 217.37 is: 299.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    392.01 : 540.99 = 217.37 : x
  2. Step 2: Convert to fraction form
    392.01/540.99 = 217.37/x
  3. Step 3: Cross multiply
    392.01x = 540.99 × 217.37
  4. Step 4: Simplify right side
    392.01x = 117,595.00
  5. Step 5: Solve for x
    x = 117,595.00/392.01
  6. Step 6: Final answer
    x = 299.98

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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.