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Finding the Fourth Proportional to 216.27, 298.44 and 118.02

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Solution

The fourth proportional to 216.27, 298.44 and 118.02 is: 162.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    216.27 : 298.44 = 118.02 : x
  2. Step 2: Convert to fraction form
    216.27/298.44 = 118.02/x
  3. Step 3: Cross multiply
    216.27x = 298.44 × 118.02
  4. Step 4: Simplify right side
    216.27x = 35,221.89
  5. Step 5: Solve for x
    x = 35,221.89/216.27
  6. Step 6: Final answer
    x = 162.86

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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.