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Finding the Fourth Proportional to 202.72, 281.19 and 201.10

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Solution

The fourth proportional to 202.72, 281.19 and 201.10 is: 278.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    202.72 : 281.19 = 201.10 : x
  2. Step 2: Convert to fraction form
    202.72/281.19 = 201.10/x
  3. Step 3: Cross multiply
    202.72x = 281.19 × 201.10
  4. Step 4: Simplify right side
    202.72x = 56,547.31
  5. Step 5: Solve for x
    x = 56,547.31/202.72
  6. Step 6: Final answer
    x = 278.94

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.