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Finding the Fourth Proportional to 266.96, 368.42 and 148.95

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Solution

The fourth proportional to 266.96, 368.42 and 148.95 is: 205.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    266.96 : 368.42 = 148.95 : x
  2. Step 2: Convert to fraction form
    266.96/368.42 = 148.95/x
  3. Step 3: Cross multiply
    266.96x = 368.42 × 148.95
  4. Step 4: Simplify right side
    266.96x = 54,875.15
  5. Step 5: Solve for x
    x = 54,875.15/266.96
  6. Step 6: Final answer
    x = 205.56

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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.