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Finding the Fourth Proportional to 641.55, 961.52 and 333.23

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Solution

The fourth proportional to 641.55, 961.52 and 333.23 is: 499.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    641.55 : 961.52 = 333.23 : x
  2. Step 2: Convert to fraction form
    641.55/961.52 = 333.23/x
  3. Step 3: Cross multiply
    641.55x = 961.52 × 333.23
  4. Step 4: Simplify right side
    641.55x = 320,403.34
  5. Step 5: Solve for x
    x = 320,403.34/641.55
  6. Step 6: Final answer
    x = 499.42

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1.5x scale

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.