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Finding the Fourth Proportional to 716.07, 988.07 and 401.29

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Solution

The fourth proportional to 716.07, 988.07 and 401.29 is: 553.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    716.07 : 988.07 = 401.29 : x
  2. Step 2: Convert to fraction form
    716.07/988.07 = 401.29/x
  3. Step 3: Cross multiply
    716.07x = 988.07 × 401.29
  4. Step 4: Simplify right side
    716.07x = 396,495.66
  5. Step 5: Solve for x
    x = 396,495.66/716.07
  6. Step 6: Final answer
    x = 553.71

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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.