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Finding the Fourth Proportional to 465.29, 697.75 and 191.30

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Solution

The fourth proportional to 465.29, 697.75 and 191.30 is: 286.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    465.29 : 697.75 = 191.30 : x
  2. Step 2: Convert to fraction form
    465.29/697.75 = 191.30/x
  3. Step 3: Cross multiply
    465.29x = 697.75 × 191.30
  4. Step 4: Simplify right side
    465.29x = 133,480.84
  5. Step 5: Solve for x
    x = 133,480.84/465.29
  6. Step 6: Final answer
    x = 286.88

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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.