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Finding the Fourth Proportional to 202.02, 278.60 and 136.52

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Solution

The fourth proportional to 202.02, 278.60 and 136.52 is: 188.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    202.02 : 278.60 = 136.52 : x
  2. Step 2: Convert to fraction form
    202.02/278.60 = 136.52/x
  3. Step 3: Cross multiply
    202.02x = 278.60 × 136.52
  4. Step 4: Simplify right side
    202.02x = 38,034.47
  5. Step 5: Solve for x
    x = 38,034.47/202.02
  6. Step 6: Final answer
    x = 188.27

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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.