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Finding the Fourth Proportional to 913, 1,367.96 and 450.16

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Solution

The fourth proportional to 913, 1,367.96 and 450.16 is: 674.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    913 : 1,367.96 = 450.16 : x
  2. Step 2: Convert to fraction form
    913/1,367.96 = 450.16/x
  3. Step 3: Cross multiply
    913x = 1,367.96 × 450.16
  4. Step 4: Simplify right side
    913x = 615,800.87
  5. Step 5: Solve for x
    x = 615,800.87/913
  6. Step 6: Final answer
    x = 674.48

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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.