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Finding the Fourth Proportional to 479.39, 718.12 and 245.12

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Solution

The fourth proportional to 479.39, 718.12 and 245.12 is: 367.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    479.39 : 718.12 = 245.12 : x
  2. Step 2: Convert to fraction form
    479.39/718.12 = 245.12/x
  3. Step 3: Cross multiply
    479.39x = 718.12 × 245.12
  4. Step 4: Simplify right side
    479.39x = 176,021.98
  5. Step 5: Solve for x
    x = 176,021.98/479.39
  6. Step 6: Final answer
    x = 367.18

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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.