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Finding the Fourth Proportional to 672.26, 1,008.52 and 330.26

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Solution

The fourth proportional to 672.26, 1,008.52 and 330.26 is: 495.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    672.26 : 1,008.52 = 330.26 : x
  2. Step 2: Convert to fraction form
    672.26/1,008.52 = 330.26/x
  3. Step 3: Cross multiply
    672.26x = 1,008.52 × 330.26
  4. Step 4: Simplify right side
    672.26x = 333,073.82
  5. Step 5: Solve for x
    x = 333,073.82/672.26
  6. Step 6: Final answer
    x = 495.45

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1.5x scale

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.