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Finding the Fourth Proportional to 364.79, 503.61 and 217.46

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Solution

The fourth proportional to 364.79, 503.61 and 217.46 is: 300.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    364.79 : 503.61 = 217.46 : x
  2. Step 2: Convert to fraction form
    364.79/503.61 = 217.46/x
  3. Step 3: Cross multiply
    364.79x = 503.61 × 217.46
  4. Step 4: Simplify right side
    364.79x = 109,515.03
  5. Step 5: Solve for x
    x = 109,515.03/364.79
  6. Step 6: Final answer
    x = 300.21

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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.