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Finding the Fourth Proportional to 336.69, 505.98 and 328.46

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Solution

The fourth proportional to 336.69, 505.98 and 328.46 is: 493.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    336.69 : 505.98 = 328.46 : x
  2. Step 2: Convert to fraction form
    336.69/505.98 = 328.46/x
  3. Step 3: Cross multiply
    336.69x = 505.98 × 328.46
  4. Step 4: Simplify right side
    336.69x = 166,191.66
  5. Step 5: Solve for x
    x = 166,191.66/336.69
  6. Step 6: Final answer
    x = 493.60

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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.