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Finding the Fourth Proportional to 450.24, 672.17 and 385.26

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Solution

The fourth proportional to 450.24, 672.17 and 385.26 is: 575.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    450.24 : 672.17 = 385.26 : x
  2. Step 2: Convert to fraction form
    450.24/672.17 = 385.26/x
  3. Step 3: Cross multiply
    450.24x = 672.17 × 385.26
  4. Step 4: Simplify right side
    450.24x = 258,961.18
  5. Step 5: Solve for x
    x = 258,961.18/450.24
  6. Step 6: Final answer
    x = 575.16

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.