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Finding the Fourth Proportional to 203.01, 304.50 and 66.15

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Solution

The fourth proportional to 203.01, 304.50 and 66.15 is: 99.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    203.01 : 304.50 = 66.15 : x
  2. Step 2: Convert to fraction form
    203.01/304.50 = 66.15/x
  3. Step 3: Cross multiply
    203.01x = 304.50 × 66.15
  4. Step 4: Simplify right side
    203.01x = 20,142.68
  5. Step 5: Solve for x
    x = 20,142.68/203.01
  6. Step 6: Final answer
    x = 99.22

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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.