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Finding the Fourth Proportional to 201.56, 277.90 and 152.42

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Solution

The fourth proportional to 201.56, 277.90 and 152.42 is: 210.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    201.56 : 277.90 = 152.42 : x
  2. Step 2: Convert to fraction form
    201.56/277.90 = 152.42/x
  3. Step 3: Cross multiply
    201.56x = 277.90 × 152.42
  4. Step 4: Simplify right side
    201.56x = 42,357.52
  5. Step 5: Solve for x
    x = 42,357.52/201.56
  6. Step 6: Final answer
    x = 210.15

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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.