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Finding the Fourth Proportional to 294.60, 406.95 and 229.95

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Solution

The fourth proportional to 294.60, 406.95 and 229.95 is: 317.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    294.60 : 406.95 = 229.95 : x
  2. Step 2: Convert to fraction form
    294.60/406.95 = 229.95/x
  3. Step 3: Cross multiply
    294.60x = 406.95 × 229.95
  4. Step 4: Simplify right side
    294.60x = 93,578.15
  5. Step 5: Solve for x
    x = 93,578.15/294.60
  6. Step 6: Final answer
    x = 317.64

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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.