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Finding the Fourth Proportional to 364.47, 503.05 and 217.19

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Solution

The fourth proportional to 364.47, 503.05 and 217.19 is: 299.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    364.47 : 503.05 = 217.19 : x
  2. Step 2: Convert to fraction form
    364.47/503.05 = 217.19/x
  3. Step 3: Cross multiply
    364.47x = 503.05 × 217.19
  4. Step 4: Simplify right side
    364.47x = 109,256.34
  5. Step 5: Solve for x
    x = 109,256.34/364.47
  6. Step 6: Final answer
    x = 299.77

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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.