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Finding the Fourth Proportional to 479.79, 719.37 and 263.07

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Solution

The fourth proportional to 479.79, 719.37 and 263.07 is: 394.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    479.79 : 719.37 = 263.07 : x
  2. Step 2: Convert to fraction form
    479.79/719.37 = 263.07/x
  3. Step 3: Cross multiply
    479.79x = 719.37 × 263.07
  4. Step 4: Simplify right side
    479.79x = 189,244.67
  5. Step 5: Solve for x
    x = 189,244.67/479.79
  6. Step 6: Final answer
    x = 394.43

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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.