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Finding the Fourth Proportional to 479.06, 718.42 and 154.34

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Solution

The fourth proportional to 479.06, 718.42 and 154.34 is: 231.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    479.06 : 718.42 = 154.34 : x
  2. Step 2: Convert to fraction form
    479.06/718.42 = 154.34/x
  3. Step 3: Cross multiply
    479.06x = 718.42 × 154.34
  4. Step 4: Simplify right side
    479.06x = 110,880.94
  5. Step 5: Solve for x
    x = 110,880.94/479.06
  6. Step 6: Final answer
    x = 231.46

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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.