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Finding the Fourth Proportional to 365.15, 503.97 and 207.79

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Solution

The fourth proportional to 365.15, 503.97 and 207.79 is: 286.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    365.15 : 503.97 = 207.79 : x
  2. Step 2: Convert to fraction form
    365.15/503.97 = 207.79/x
  3. Step 3: Cross multiply
    365.15x = 503.97 × 207.79
  4. Step 4: Simplify right side
    365.15x = 104,719.93
  5. Step 5: Solve for x
    x = 104,719.93/365.15
  6. Step 6: Final answer
    x = 286.79

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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.