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Finding the Fourth Proportional to 722.01, 995.37 and 616.64

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Solution

The fourth proportional to 722.01, 995.37 and 616.64 is: 850.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    722.01 : 995.37 = 616.64 : x
  2. Step 2: Convert to fraction form
    722.01/995.37 = 616.64/x
  3. Step 3: Cross multiply
    722.01x = 995.37 × 616.64
  4. Step 4: Simplify right side
    722.01x = 613,779.98
  5. Step 5: Solve for x
    x = 613,779.98/722.01
  6. Step 6: Final answer
    x = 850.10

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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.