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Finding the Fourth Proportional to 401.19, 553.73 and 254.02

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Solution

The fourth proportional to 401.19, 553.73 and 254.02 is: 350.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    401.19 : 553.73 = 254.02 : x
  2. Step 2: Convert to fraction form
    401.19/553.73 = 254.02/x
  3. Step 3: Cross multiply
    401.19x = 553.73 × 254.02
  4. Step 4: Simplify right side
    401.19x = 140,658.49
  5. Step 5: Solve for x
    x = 140,658.49/401.19
  6. Step 6: Final answer
    x = 350.60

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Double scale
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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.