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Finding the Fourth Proportional to 401.37, 552.51 and 349.53

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Solution

The fourth proportional to 401.37, 552.51 and 349.53 is: 481.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    401.37 : 552.51 = 349.53 : x
  2. Step 2: Convert to fraction form
    401.37/552.51 = 349.53/x
  3. Step 3: Cross multiply
    401.37x = 552.51 × 349.53
  4. Step 4: Simplify right side
    401.37x = 193,118.82
  5. Step 5: Solve for x
    x = 193,118.82/401.37
  6. Step 6: Final answer
    x = 481.15

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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.