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Finding the Fourth Proportional to 450.38, 674.64 and 313.71

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Solution

The fourth proportional to 450.38, 674.64 and 313.71 is: 469.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    450.38 : 674.64 = 313.71 : x
  2. Step 2: Convert to fraction form
    450.38/674.64 = 313.71/x
  3. Step 3: Cross multiply
    450.38x = 674.64 × 313.71
  4. Step 4: Simplify right side
    450.38x = 211,641.31
  5. Step 5: Solve for x
    x = 211,641.31/450.38
  6. Step 6: Final answer
    x = 469.92

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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.