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Finding the Fourth Proportional to 697.70, 962.09 and 448.82

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Solution

The fourth proportional to 697.70, 962.09 and 448.82 is: 618.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    697.70 : 962.09 = 448.82 : x
  2. Step 2: Convert to fraction form
    697.70/962.09 = 448.82/x
  3. Step 3: Cross multiply
    697.70x = 962.09 × 448.82
  4. Step 4: Simplify right side
    697.70x = 431,800.42
  5. Step 5: Solve for x
    x = 431,800.42/697.70
  6. Step 6: Final answer
    x = 618.90

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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.