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Finding the Fourth Proportional to 294.05, 405.70 and 169.70

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Solution

The fourth proportional to 294.05, 405.70 and 169.70 is: 234.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    294.05 : 405.70 = 169.70 : x
  2. Step 2: Convert to fraction form
    294.05/405.70 = 169.70/x
  3. Step 3: Cross multiply
    294.05x = 405.70 × 169.70
  4. Step 4: Simplify right side
    294.05x = 68,845.26
  5. Step 5: Solve for x
    x = 68,845.26/294.05
  6. Step 6: Final answer
    x = 234.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.