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Finding the Fourth Proportional to 616.25, 850.43 and 354.35

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Solution

The fourth proportional to 616.25, 850.43 and 354.35 is: 489.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    616.25 : 850.43 = 354.35 : x
  2. Step 2: Convert to fraction form
    616.25/850.43 = 354.35/x
  3. Step 3: Cross multiply
    616.25x = 850.43 × 354.35
  4. Step 4: Simplify right side
    616.25x = 301,349.87
  5. Step 5: Solve for x
    x = 301,349.87/616.25
  6. Step 6: Final answer
    x = 489.01

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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.