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Finding the Fourth Proportional to 349.33, 481.60 and 290.10

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Solution

The fourth proportional to 349.33, 481.60 and 290.10 is: 399.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    349.33 : 481.60 = 290.10 : x
  2. Step 2: Convert to fraction form
    349.33/481.60 = 290.10/x
  3. Step 3: Cross multiply
    349.33x = 481.60 × 290.10
  4. Step 4: Simplify right side
    349.33x = 139,712.16
  5. Step 5: Solve for x
    x = 139,712.16/349.33
  6. Step 6: Final answer
    x = 399.94

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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.