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Finding the Fourth Proportional to 266.47, 367.74 and 155.95

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Solution

The fourth proportional to 266.47, 367.74 and 155.95 is: 215.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    266.47 : 367.74 = 155.95 : x
  2. Step 2: Convert to fraction form
    266.47/367.74 = 155.95/x
  3. Step 3: Cross multiply
    266.47x = 367.74 × 155.95
  4. Step 4: Simplify right side
    266.47x = 57,349.17
  5. Step 5: Solve for x
    x = 57,349.17/266.47
  6. Step 6: Final answer
    x = 215.22

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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.