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Finding the Fourth Proportional to 657.99, 986.29 and 267.84

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Solution

The fourth proportional to 657.99, 986.29 and 267.84 is: 401.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    657.99 : 986.29 = 267.84 : x
  2. Step 2: Convert to fraction form
    657.99/986.29 = 267.84/x
  3. Step 3: Cross multiply
    657.99x = 986.29 × 267.84
  4. Step 4: Simplify right side
    657.99x = 264,168.75
  5. Step 5: Solve for x
    x = 264,168.75/657.99
  6. Step 6: Final answer
    x = 401.48

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.