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Finding the Fourth Proportional to 722.35, 995.78 and 520.52

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Solution

The fourth proportional to 722.35, 995.78 and 520.52 is: 717.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    722.35 : 995.78 = 520.52 : x
  2. Step 2: Convert to fraction form
    722.35/995.78 = 520.52/x
  3. Step 3: Cross multiply
    722.35x = 995.78 × 520.52
  4. Step 4: Simplify right side
    722.35x = 518,320.80
  5. Step 5: Solve for x
    x = 518,320.80/722.35
  6. Step 6: Final answer
    x = 717.55

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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.