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Finding the Fourth Proportional to 226.18, 312.51 and 197.02

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Solution

The fourth proportional to 226.18, 312.51 and 197.02 is: 272.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    226.18 : 312.51 = 197.02 : x
  2. Step 2: Convert to fraction form
    226.18/312.51 = 197.02/x
  3. Step 3: Cross multiply
    226.18x = 312.51 × 197.02
  4. Step 4: Simplify right side
    226.18x = 61,570.72
  5. Step 5: Solve for x
    x = 61,570.72/226.18
  6. Step 6: Final answer
    x = 272.22

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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.