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Finding the Fourth Proportional to 635.96, 876.70 and 448.88

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Solution

The fourth proportional to 635.96, 876.70 and 448.88 is: 618.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    635.96 : 876.70 = 448.88 : x
  2. Step 2: Convert to fraction form
    635.96/876.70 = 448.88/x
  3. Step 3: Cross multiply
    635.96x = 876.70 × 448.88
  4. Step 4: Simplify right side
    635.96x = 393,533.10
  5. Step 5: Solve for x
    x = 393,533.10/635.96
  6. Step 6: Final answer
    x = 618.80

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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.