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Finding the Fourth Proportional to 200.32, 299.40 and 178.91

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Solution

The fourth proportional to 200.32, 299.40 and 178.91 is: 267.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    200.32 : 299.40 = 178.91 : x
  2. Step 2: Convert to fraction form
    200.32/299.40 = 178.91/x
  3. Step 3: Cross multiply
    200.32x = 299.40 × 178.91
  4. Step 4: Simplify right side
    200.32x = 53,564.61
  5. Step 5: Solve for x
    x = 53,564.61/200.32
  6. Step 6: Final answer
    x = 267.39

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.