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Finding the Fourth Proportional to 349.05, 480.65 and 250.64

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Solution

The fourth proportional to 349.05, 480.65 and 250.64 is: 345.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    349.05 : 480.65 = 250.64 : x
  2. Step 2: Convert to fraction form
    349.05/480.65 = 250.64/x
  3. Step 3: Cross multiply
    349.05x = 480.65 × 250.64
  4. Step 4: Simplify right side
    349.05x = 120,468.34
  5. Step 5: Solve for x
    x = 120,468.34/349.05
  6. Step 6: Final answer
    x = 345.13

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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.