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Finding the Fourth Proportional to 201.73, 302.60 and 99.10

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Solution

The fourth proportional to 201.73, 302.60 and 99.10 is: 148.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    201.73 : 302.60 = 99.10 : x
  2. Step 2: Convert to fraction form
    201.73/302.60 = 99.10/x
  3. Step 3: Cross multiply
    201.73x = 302.60 × 99.10
  4. Step 4: Simplify right side
    201.73x = 29,987.66
  5. Step 5: Solve for x
    x = 29,987.66/201.73
  6. Step 6: Final answer
    x = 148.65

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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.