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Finding the Fourth Proportional to 479.10, 718.79 and 186.69

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Solution

The fourth proportional to 479.10, 718.79 and 186.69 is: 280.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    479.10 : 718.79 = 186.69 : x
  2. Step 2: Convert to fraction form
    479.10/718.79 = 186.69/x
  3. Step 3: Cross multiply
    479.10x = 718.79 × 186.69
  4. Step 4: Simplify right side
    479.10x = 134,189.97
  5. Step 5: Solve for x
    x = 134,189.97/479.10
  6. Step 6: Final answer
    x = 280.09

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.