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Finding the Fourth Proportional to 642.83, 963.86 and 350.37

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Solution

The fourth proportional to 642.83, 963.86 and 350.37 is: 525.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    642.83 : 963.86 = 350.37 : x
  2. Step 2: Convert to fraction form
    642.83/963.86 = 350.37/x
  3. Step 3: Cross multiply
    642.83x = 963.86 × 350.37
  4. Step 4: Simplify right side
    642.83x = 337,705.88
  5. Step 5: Solve for x
    x = 337,705.88/642.83
  6. Step 6: Final answer
    x = 525.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.