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Finding the Fourth Proportional to 329.05, 453.51 and 313.66

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Solution

The fourth proportional to 329.05, 453.51 and 313.66 is: 432.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    329.05 : 453.51 = 313.66 : x
  2. Step 2: Convert to fraction form
    329.05/453.51 = 313.66/x
  3. Step 3: Cross multiply
    329.05x = 453.51 × 313.66
  4. Step 4: Simplify right side
    329.05x = 142,247.95
  5. Step 5: Solve for x
    x = 142,247.95/329.05
  6. Step 6: Final answer
    x = 432.30

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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.