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Finding the Fourth Proportional to 336.79, 503.97 and 328.69

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Solution

The fourth proportional to 336.79, 503.97 and 328.69 is: 491.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    336.79 : 503.97 = 328.69 : x
  2. Step 2: Convert to fraction form
    336.79/503.97 = 328.69/x
  3. Step 3: Cross multiply
    336.79x = 503.97 × 328.69
  4. Step 4: Simplify right side
    336.79x = 165,649.90
  5. Step 5: Solve for x
    x = 165,649.90/336.79
  6. Step 6: Final answer
    x = 491.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.