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Finding the Fourth Proportional to 349.84, 481.68 and 317.44

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Solution

The fourth proportional to 349.84, 481.68 and 317.44 is: 437.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    349.84 : 481.68 = 317.44 : x
  2. Step 2: Convert to fraction form
    349.84/481.68 = 317.44/x
  3. Step 3: Cross multiply
    349.84x = 481.68 × 317.44
  4. Step 4: Simplify right side
    349.84x = 152,904.50
  5. Step 5: Solve for x
    x = 152,904.50/349.84
  6. Step 6: Final answer
    x = 437.07

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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.