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Finding the Fourth Proportional to 366.96, 550.80 and 259.68

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Solution

The fourth proportional to 366.96, 550.80 and 259.68 is: 389.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    366.96 : 550.80 = 259.68 : x
  2. Step 2: Convert to fraction form
    366.96/550.80 = 259.68/x
  3. Step 3: Cross multiply
    366.96x = 550.80 × 259.68
  4. Step 4: Simplify right side
    366.96x = 143,031.74
  5. Step 5: Solve for x
    x = 143,031.74/366.96
  6. Step 6: Final answer
    x = 389.77

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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.