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Finding the Fourth Proportional to 366.60, 505.50 and 279.48

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Solution

The fourth proportional to 366.60, 505.50 and 279.48 is: 385.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    366.60 : 505.50 = 279.48 : x
  2. Step 2: Convert to fraction form
    366.60/505.50 = 279.48/x
  3. Step 3: Cross multiply
    366.60x = 505.50 × 279.48
  4. Step 4: Simplify right side
    366.60x = 141,277.14
  5. Step 5: Solve for x
    x = 141,277.14/366.60
  6. Step 6: Final answer
    x = 385.37

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.