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Finding the Fourth Proportional to 201.82, 302.60 and 99.04

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Solution

The fourth proportional to 201.82, 302.60 and 99.04 is: 148.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    201.82 : 302.60 = 99.04 : x
  2. Step 2: Convert to fraction form
    201.82/302.60 = 99.04/x
  3. Step 3: Cross multiply
    201.82x = 302.60 × 99.04
  4. Step 4: Simplify right side
    201.82x = 29,969.50
  5. Step 5: Solve for x
    x = 29,969.50/201.82
  6. Step 6: Final answer
    x = 148.50

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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.