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Finding the Fourth Proportional to 349.36, 484.33 and 330.87

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Solution

The fourth proportional to 349.36, 484.33 and 330.87 is: 458.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    349.36 : 484.33 = 330.87 : x
  2. Step 2: Convert to fraction form
    349.36/484.33 = 330.87/x
  3. Step 3: Cross multiply
    349.36x = 484.33 × 330.87
  4. Step 4: Simplify right side
    349.36x = 160,250.27
  5. Step 5: Solve for x
    x = 160,250.27/349.36
  6. Step 6: Final answer
    x = 458.70

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.