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Finding the Fourth Proportional to 634.79, 953.07 and 326.87

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Solution

The fourth proportional to 634.79, 953.07 and 326.87 is: 490.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    634.79 : 953.07 = 326.87 : x
  2. Step 2: Convert to fraction form
    634.79/953.07 = 326.87/x
  3. Step 3: Cross multiply
    634.79x = 953.07 × 326.87
  4. Step 4: Simplify right side
    634.79x = 311,525.23
  5. Step 5: Solve for x
    x = 311,525.23/634.79
  6. Step 6: Final answer
    x = 490.75

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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.