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Finding the Fourth Proportional to 330.12, 452.97 and 317.16

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Solution

The fourth proportional to 330.12, 452.97 and 317.16 is: 435.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    330.12 : 452.97 = 317.16 : x
  2. Step 2: Convert to fraction form
    330.12/452.97 = 317.16/x
  3. Step 3: Cross multiply
    330.12x = 452.97 × 317.16
  4. Step 4: Simplify right side
    330.12x = 143,663.97
  5. Step 5: Solve for x
    x = 143,663.97/330.12
  6. Step 6: Final answer
    x = 435.19

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.