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Finding the Fourth Proportional to 635.73, 876.72 and 436.21

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Solution

The fourth proportional to 635.73, 876.72 and 436.21 is: 601.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    635.73 : 876.72 = 436.21 : x
  2. Step 2: Convert to fraction form
    635.73/876.72 = 436.21/x
  3. Step 3: Cross multiply
    635.73x = 876.72 × 436.21
  4. Step 4: Simplify right side
    635.73x = 382,430.17
  5. Step 5: Solve for x
    x = 382,430.17/635.73
  6. Step 6: Final answer
    x = 601.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.