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Finding the Fourth Proportional to 479.69, 719.84 and 449.92

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Solution

The fourth proportional to 479.69, 719.84 and 449.92 is: 675.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    479.69 : 719.84 = 449.92 : x
  2. Step 2: Convert to fraction form
    479.69/719.84 = 449.92/x
  3. Step 3: Cross multiply
    479.69x = 719.84 × 449.92
  4. Step 4: Simplify right side
    479.69x = 323,869.91
  5. Step 5: Solve for x
    x = 323,869.91/479.69
  6. Step 6: Final answer
    x = 675.17

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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.