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Finding the Fourth Proportional to 722, 995.82 and 501.32

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Solution

The fourth proportional to 722, 995.82 and 501.32 is: 691.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    722 : 995.82 = 501.32 : x
  2. Step 2: Convert to fraction form
    722/995.82 = 501.32/x
  3. Step 3: Cross multiply
    722x = 995.82 × 501.32
  4. Step 4: Simplify right side
    722x = 499,224.48
  5. Step 5: Solve for x
    x = 499,224.48/722
  6. Step 6: Final answer
    x = 691.45

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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.