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Finding the Fourth Proportional to 616.50, 850.23 and 469.26

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Solution

The fourth proportional to 616.50, 850.23 and 469.26 is: 647.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    616.50 : 850.23 = 469.26 : x
  2. Step 2: Convert to fraction form
    616.50/850.23 = 469.26/x
  3. Step 3: Cross multiply
    616.50x = 850.23 × 469.26
  4. Step 4: Simplify right side
    616.50x = 398,978.93
  5. Step 5: Solve for x
    x = 398,978.93/616.50
  6. Step 6: Final answer
    x = 647.17

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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.