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Finding the Fourth Proportional to 394.91, 544.48 and 301.51

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Solution

The fourth proportional to 394.91, 544.48 and 301.51 is: 415.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    394.91 : 544.48 = 301.51 : x
  2. Step 2: Convert to fraction form
    394.91/544.48 = 301.51/x
  3. Step 3: Cross multiply
    394.91x = 544.48 × 301.51
  4. Step 4: Simplify right side
    394.91x = 164,163.03
  5. Step 5: Solve for x
    x = 164,163.03/394.91
  6. Step 6: Final answer
    x = 415.70

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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.