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Finding the Fourth Proportional to 330.26, 452.45 and 317.95

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Solution

The fourth proportional to 330.26, 452.45 and 317.95 is: 435.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    330.26 : 452.45 = 317.95 : x
  2. Step 2: Convert to fraction form
    330.26/452.45 = 317.95/x
  3. Step 3: Cross multiply
    330.26x = 452.45 × 317.95
  4. Step 4: Simplify right side
    330.26x = 143,856.48
  5. Step 5: Solve for x
    x = 143,856.48/330.26
  6. Step 6: Final answer
    x = 435.59

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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.