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Finding the Fourth Proportional to 266.55, 367.70 and 173.18

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Solution

The fourth proportional to 266.55, 367.70 and 173.18 is: 238.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    266.55 : 367.70 = 173.18 : x
  2. Step 2: Convert to fraction form
    266.55/367.70 = 173.18/x
  3. Step 3: Cross multiply
    266.55x = 367.70 × 173.18
  4. Step 4: Simplify right side
    266.55x = 63,678.29
  5. Step 5: Solve for x
    x = 63,678.29/266.55
  6. Step 6: Final answer
    x = 238.90

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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.