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Finding the Fourth Proportional to 293, 439.50 and 100.64

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Solution

The fourth proportional to 293, 439.50 and 100.64 is: 150.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    293 : 439.50 = 100.64 : x
  2. Step 2: Convert to fraction form
    293/439.50 = 100.64/x
  3. Step 3: Cross multiply
    293x = 439.50 × 100.64
  4. Step 4: Simplify right side
    293x = 44,231.28
  5. Step 5: Solve for x
    x = 44,231.28/293
  6. Step 6: Final answer
    x = 150.96

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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.