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Finding the Fourth Proportional to 697.80, 963.36 and 462

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Solution

The fourth proportional to 697.80, 963.36 and 462 is: 637.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    697.80 : 963.36 = 462 : x
  2. Step 2: Convert to fraction form
    697.80/963.36 = 462/x
  3. Step 3: Cross multiply
    697.80x = 963.36 × 462
  4. Step 4: Simplify right side
    697.80x = 445,072.32
  5. Step 5: Solve for x
    x = 445,072.32/697.80
  6. Step 6: Final answer
    x = 637.82

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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.