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Finding the Fourth Proportional to 465.09, 697.61 and 191.17

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Solution

The fourth proportional to 465.09, 697.61 and 191.17 is: 286.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    465.09 : 697.61 = 191.17 : x
  2. Step 2: Convert to fraction form
    465.09/697.61 = 191.17/x
  3. Step 3: Cross multiply
    465.09x = 697.61 × 191.17
  4. Step 4: Simplify right side
    465.09x = 133,362.10
  5. Step 5: Solve for x
    x = 133,362.10/465.09
  6. Step 6: Final answer
    x = 286.74

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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.