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Finding the Fourth Proportional to 265.94, 398.59 and 136.03

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Solution

The fourth proportional to 265.94, 398.59 and 136.03 is: 203.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    265.94 : 398.59 = 136.03 : x
  2. Step 2: Convert to fraction form
    265.94/398.59 = 136.03/x
  3. Step 3: Cross multiply
    265.94x = 398.59 × 136.03
  4. Step 4: Simplify right side
    265.94x = 54,220.20
  5. Step 5: Solve for x
    x = 54,220.20/265.94
  6. Step 6: Final answer
    x = 203.88

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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.