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Finding the Fourth Proportional to 265.33, 398.13 and 111.23

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Solution

The fourth proportional to 265.33, 398.13 and 111.23 is: 166.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    265.33 : 398.13 = 111.23 : x
  2. Step 2: Convert to fraction form
    265.33/398.13 = 111.23/x
  3. Step 3: Cross multiply
    265.33x = 398.13 × 111.23
  4. Step 4: Simplify right side
    265.33x = 44,284.00
  5. Step 5: Solve for x
    x = 44,284.00/265.33
  6. Step 6: Final answer
    x = 166.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.