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Finding the Fourth Proportional to 479.91, 719.73 and 133.17

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Solution

The fourth proportional to 479.91, 719.73 and 133.17 is: 199.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    479.91 : 719.73 = 133.17 : x
  2. Step 2: Convert to fraction form
    479.91/719.73 = 133.17/x
  3. Step 3: Cross multiply
    479.91x = 719.73 × 133.17
  4. Step 4: Simplify right side
    479.91x = 95,846.44
  5. Step 5: Solve for x
    x = 95,846.44/479.91
  6. Step 6: Final answer
    x = 199.72

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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.