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Finding the Fourth Proportional to 266.22, 400.96 and 202.54

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Solution

The fourth proportional to 266.22, 400.96 and 202.54 is: 305.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    266.22 : 400.96 = 202.54 : x
  2. Step 2: Convert to fraction form
    266.22/400.96 = 202.54/x
  3. Step 3: Cross multiply
    266.22x = 400.96 × 202.54
  4. Step 4: Simplify right side
    266.22x = 81,210.44
  5. Step 5: Solve for x
    x = 81,210.44/266.22
  6. Step 6: Final answer
    x = 305.05

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.