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Finding the Fourth Proportional to 401.36, 552.84 and 374.48

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Solution

The fourth proportional to 401.36, 552.84 and 374.48 is: 515.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    401.36 : 552.84 = 374.48 : x
  2. Step 2: Convert to fraction form
    401.36/552.84 = 374.48/x
  3. Step 3: Cross multiply
    401.36x = 552.84 × 374.48
  4. Step 4: Simplify right side
    401.36x = 207,027.52
  5. Step 5: Solve for x
    x = 207,027.52/401.36
  6. Step 6: Final answer
    x = 515.82

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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.