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Finding the Fourth Proportional to 263.58, 394.40 and 229.46

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Solution

The fourth proportional to 263.58, 394.40 and 229.46 is: 343.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    263.58 : 394.40 = 229.46 : x
  2. Step 2: Convert to fraction form
    263.58/394.40 = 229.46/x
  3. Step 3: Cross multiply
    263.58x = 394.40 × 229.46
  4. Step 4: Simplify right side
    263.58x = 90,499.02
  5. Step 5: Solve for x
    x = 90,499.02/263.58
  6. Step 6: Final answer
    x = 343.35

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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.