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Finding the Fourth Proportional to 265.21, 365.91 and 171.95

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Solution

The fourth proportional to 265.21, 365.91 and 171.95 is: 237.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    265.21 : 365.91 = 171.95 : x
  2. Step 2: Convert to fraction form
    265.21/365.91 = 171.95/x
  3. Step 3: Cross multiply
    265.21x = 365.91 × 171.95
  4. Step 4: Simplify right side
    265.21x = 62,919.17
  5. Step 5: Solve for x
    x = 62,919.17/265.21
  6. Step 6: Final answer
    x = 237.25

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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.