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Finding the Fourth Proportional to 467.67, 643.94 and 401.19

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Solution

The fourth proportional to 467.67, 643.94 and 401.19 is: 552.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    467.67 : 643.94 = 401.19 : x
  2. Step 2: Convert to fraction form
    467.67/643.94 = 401.19/x
  3. Step 3: Cross multiply
    467.67x = 643.94 × 401.19
  4. Step 4: Simplify right side
    467.67x = 258,340.28
  5. Step 5: Solve for x
    x = 258,340.28/467.67
  6. Step 6: Final answer
    x = 552.40

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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.