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Finding the Fourth Proportional to 201.50, 302.40 and 110.30

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Solution

The fourth proportional to 201.50, 302.40 and 110.30 is: 165.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    201.50 : 302.40 = 110.30 : x
  2. Step 2: Convert to fraction form
    201.50/302.40 = 110.30/x
  3. Step 3: Cross multiply
    201.50x = 302.40 × 110.30
  4. Step 4: Simplify right side
    201.50x = 33,353.21
  5. Step 5: Solve for x
    x = 33,353.21/201.50
  6. Step 6: Final answer
    x = 165.53

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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.