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Finding the Fourth Proportional to 349.89, 483.18 and 225.77

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Solution

The fourth proportional to 349.89, 483.18 and 225.77 is: 311.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    349.89 : 483.18 = 225.77 : x
  2. Step 2: Convert to fraction form
    349.89/483.18 = 225.77/x
  3. Step 3: Cross multiply
    349.89x = 483.18 × 225.77
  4. Step 4: Simplify right side
    349.89x = 109,084.29
  5. Step 5: Solve for x
    x = 109,084.29/349.89
  6. Step 6: Final answer
    x = 311.76

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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.