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Finding the Fourth Proportional to 136.00, 203.65 and 75.05

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Solution

The fourth proportional to 136.00, 203.65 and 75.05 is: 112.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    136.00 : 203.65 = 75.05 : x
  2. Step 2: Convert to fraction form
    136.00/203.65 = 75.05/x
  3. Step 3: Cross multiply
    136.00x = 203.65 × 75.05
  4. Step 4: Simplify right side
    136.00x = 15,283.49
  5. Step 5: Solve for x
    x = 15,283.49/136.00
  6. Step 6: Final answer
    x = 112.38

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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.