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Finding the Fourth Proportional to 266.66, 368.18 and 201.52

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Solution

The fourth proportional to 266.66, 368.18 and 201.52 is: 278.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    266.66 : 368.18 = 201.52 : x
  2. Step 2: Convert to fraction form
    266.66/368.18 = 201.52/x
  3. Step 3: Cross multiply
    266.66x = 368.18 × 201.52
  4. Step 4: Simplify right side
    266.66x = 74,195.63
  5. Step 5: Solve for x
    x = 74,195.63/266.66
  6. Step 6: Final answer
    x = 278.24

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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.