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Finding the Fourth Proportional to 635.40, 953.70 and 544.20

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Solution

The fourth proportional to 635.40, 953.70 and 544.20 is: 816.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    635.40 : 953.70 = 544.20 : x
  2. Step 2: Convert to fraction form
    635.40/953.70 = 544.20/x
  3. Step 3: Cross multiply
    635.40x = 953.70 × 544.20
  4. Step 4: Simplify right side
    635.40x = 519,003.54
  5. Step 5: Solve for x
    x = 519,003.54/635.40
  6. Step 6: Final answer
    x = 816.81

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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.