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Finding the Fourth Proportional to 465.65, 697.87 and 221.84

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Solution

The fourth proportional to 465.65, 697.87 and 221.84 is: 332.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    465.65 : 697.87 = 221.84 : x
  2. Step 2: Convert to fraction form
    465.65/697.87 = 221.84/x
  3. Step 3: Cross multiply
    465.65x = 697.87 × 221.84
  4. Step 4: Simplify right side
    465.65x = 154,815.48
  5. Step 5: Solve for x
    x = 154,815.48/465.65
  6. Step 6: Final answer
    x = 332.47

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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.