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Finding the Fourth Proportional to 266.79, 368.11 and 148.74

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Solution

The fourth proportional to 266.79, 368.11 and 148.74 is: 205.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    266.79 : 368.11 = 148.74 : x
  2. Step 2: Convert to fraction form
    266.79/368.11 = 148.74/x
  3. Step 3: Cross multiply
    266.79x = 368.11 × 148.74
  4. Step 4: Simplify right side
    266.79x = 54,751.49
  5. Step 5: Solve for x
    x = 54,751.49/266.79
  6. Step 6: Final answer
    x = 205.22

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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.