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Finding the Fourth Proportional to 425.10, 636.73 and 356.14

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Solution

The fourth proportional to 425.10, 636.73 and 356.14 is: 533.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    425.10 : 636.73 = 356.14 : x
  2. Step 2: Convert to fraction form
    425.10/636.73 = 356.14/x
  3. Step 3: Cross multiply
    425.10x = 636.73 × 356.14
  4. Step 4: Simplify right side
    425.10x = 226,765.02
  5. Step 5: Solve for x
    x = 226,765.02/425.10
  6. Step 6: Final answer
    x = 533.44

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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.