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Finding the Fourth Proportional to 349.96, 482.88 and 225.64

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Solution

The fourth proportional to 349.96, 482.88 and 225.64 is: 311.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    349.96 : 482.88 = 225.64 : x
  2. Step 2: Convert to fraction form
    349.96/482.88 = 225.64/x
  3. Step 3: Cross multiply
    349.96x = 482.88 × 225.64
  4. Step 4: Simplify right side
    349.96x = 108,957.04
  5. Step 5: Solve for x
    x = 108,957.04/349.96
  6. Step 6: Final answer
    x = 311.34

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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.