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Finding the Fourth Proportional to 201.27, 302.19 and 147.15

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Solution

The fourth proportional to 201.27, 302.19 and 147.15 is: 220.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    201.27 : 302.19 = 147.15 : x
  2. Step 2: Convert to fraction form
    201.27/302.19 = 147.15/x
  3. Step 3: Cross multiply
    201.27x = 302.19 × 147.15
  4. Step 4: Simplify right side
    201.27x = 44,467.26
  5. Step 5: Solve for x
    x = 44,467.26/201.27
  6. Step 6: Final answer
    x = 220.93

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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.