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Finding the Fourth Proportional to 367.90, 550.77 and 316.87

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Solution

The fourth proportional to 367.90, 550.77 and 316.87 is: 474.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    367.90 : 550.77 = 316.87 : x
  2. Step 2: Convert to fraction form
    367.90/550.77 = 316.87/x
  3. Step 3: Cross multiply
    367.90x = 550.77 × 316.87
  4. Step 4: Simplify right side
    367.90x = 174,522.49
  5. Step 5: Solve for x
    x = 174,522.49/367.90
  6. Step 6: Final answer
    x = 474.37

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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.