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Finding the Fourth Proportional to 272.19, 375.70 and 202.22

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Solution

The fourth proportional to 272.19, 375.70 and 202.22 is: 279.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    272.19 : 375.70 = 202.22 : x
  2. Step 2: Convert to fraction form
    272.19/375.70 = 202.22/x
  3. Step 3: Cross multiply
    272.19x = 375.70 × 202.22
  4. Step 4: Simplify right side
    272.19x = 75,974.05
  5. Step 5: Solve for x
    x = 75,974.05/272.19
  6. Step 6: Final answer
    x = 279.13

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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.