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Finding the Fourth Proportional to 722.72, 995.04 and 630.72

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Solution

The fourth proportional to 722.72, 995.04 and 630.72 is: 868.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    722.72 : 995.04 = 630.72 : x
  2. Step 2: Convert to fraction form
    722.72/995.04 = 630.72/x
  3. Step 3: Cross multiply
    722.72x = 995.04 × 630.72
  4. Step 4: Simplify right side
    722.72x = 627,591.63
  5. Step 5: Solve for x
    x = 627,591.63/722.72
  6. Step 6: Final answer
    x = 868.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.