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Finding the Fourth Proportional to 365.04, 503.82 and 209.79

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Solution

The fourth proportional to 365.04, 503.82 and 209.79 is: 289.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    365.04 : 503.82 = 209.79 : x
  2. Step 2: Convert to fraction form
    365.04/503.82 = 209.79/x
  3. Step 3: Cross multiply
    365.04x = 503.82 × 209.79
  4. Step 4: Simplify right side
    365.04x = 105,696.40
  5. Step 5: Solve for x
    x = 105,696.40/365.04
  6. Step 6: Final answer
    x = 289.55

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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.