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Finding the Fourth Proportional to 202.11, 302.58 and 93.66

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Solution

The fourth proportional to 202.11, 302.58 and 93.66 is: 140.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    202.11 : 302.58 = 93.66 : x
  2. Step 2: Convert to fraction form
    202.11/302.58 = 93.66/x
  3. Step 3: Cross multiply
    202.11x = 302.58 × 93.66
  4. Step 4: Simplify right side
    202.11x = 28,339.64
  5. Step 5: Solve for x
    x = 28,339.64/202.11
  6. Step 6: Final answer
    x = 140.22

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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.