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Finding the Fourth Proportional to 698.24, 963.42 and 436.16

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Solution

The fourth proportional to 698.24, 963.42 and 436.16 is: 601.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    698.24 : 963.42 = 436.16 : x
  2. Step 2: Convert to fraction form
    698.24/963.42 = 436.16/x
  3. Step 3: Cross multiply
    698.24x = 963.42 × 436.16
  4. Step 4: Simplify right side
    698.24x = 420,205.27
  5. Step 5: Solve for x
    x = 420,205.27/698.24
  6. Step 6: Final answer
    x = 601.81

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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.