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Finding the Fourth Proportional to 307.06, 459.58 and 191.61

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Solution

The fourth proportional to 307.06, 459.58 and 191.61 is: 286.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    307.06 : 459.58 = 191.61 : x
  2. Step 2: Convert to fraction form
    307.06/459.58 = 191.61/x
  3. Step 3: Cross multiply
    307.06x = 459.58 × 191.61
  4. Step 4: Simplify right side
    307.06x = 88,057.83
  5. Step 5: Solve for x
    x = 88,057.83/307.06
  6. Step 6: Final answer
    x = 286.78

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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.