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Finding the Fourth Proportional to 329.60, 453.66 and 310.70

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Solution

The fourth proportional to 329.60, 453.66 and 310.70 is: 427.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    329.60 : 453.66 = 310.70 : x
  2. Step 2: Convert to fraction form
    329.60/453.66 = 310.70/x
  3. Step 3: Cross multiply
    329.60x = 453.66 × 310.70
  4. Step 4: Simplify right side
    329.60x = 140,952.16
  5. Step 5: Solve for x
    x = 140,952.16/329.60
  6. Step 6: Final answer
    x = 427.65

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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.