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Finding the Fourth Proportional to 365.19, 503.74 and 217.72

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Solution

The fourth proportional to 365.19, 503.74 and 217.72 is: 300.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    365.19 : 503.74 = 217.72 : x
  2. Step 2: Convert to fraction form
    365.19/503.74 = 217.72/x
  3. Step 3: Cross multiply
    365.19x = 503.74 × 217.72
  4. Step 4: Simplify right side
    365.19x = 109,674.27
  5. Step 5: Solve for x
    x = 109,674.27/365.19
  6. Step 6: Final answer
    x = 300.32

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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.