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Finding the Fourth Proportional to 479.10, 719.32 and 235.68

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Solution

The fourth proportional to 479.10, 719.32 and 235.68 is: 353.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    479.10 : 719.32 = 235.68 : x
  2. Step 2: Convert to fraction form
    479.10/719.32 = 235.68/x
  3. Step 3: Cross multiply
    479.10x = 719.32 × 235.68
  4. Step 4: Simplify right side
    479.10x = 169,529.34
  5. Step 5: Solve for x
    x = 169,529.34/479.10
  6. Step 6: Final answer
    x = 353.85

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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.