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Finding the Fourth Proportional to 479.22, 719.19 and 356.11

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Solution

The fourth proportional to 479.22, 719.19 and 356.11 is: 534.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    479.22 : 719.19 = 356.11 : x
  2. Step 2: Convert to fraction form
    479.22/719.19 = 356.11/x
  3. Step 3: Cross multiply
    479.22x = 719.19 × 356.11
  4. Step 4: Simplify right side
    479.22x = 256,109.85
  5. Step 5: Solve for x
    x = 256,109.85/479.22
  6. Step 6: Final answer
    x = 534.43

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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.