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Finding the Fourth Proportional to 427.49, 641.24 and 373.49

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Solution

The fourth proportional to 427.49, 641.24 and 373.49 is: 560.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    427.49 : 641.24 = 373.49 : x
  2. Step 2: Convert to fraction form
    427.49/641.24 = 373.49/x
  3. Step 3: Cross multiply
    427.49x = 641.24 × 373.49
  4. Step 4: Simplify right side
    427.49x = 239,496.73
  5. Step 5: Solve for x
    x = 239,496.73/427.49
  6. Step 6: Final answer
    x = 560.24

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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.