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Finding the Fourth Proportional to 636.16, 953.79 and 245.83

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Solution

The fourth proportional to 636.16, 953.79 and 245.83 is: 368.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    636.16 : 953.79 = 245.83 : x
  2. Step 2: Convert to fraction form
    636.16/953.79 = 245.83/x
  3. Step 3: Cross multiply
    636.16x = 953.79 × 245.83
  4. Step 4: Simplify right side
    636.16x = 234,470.20
  5. Step 5: Solve for x
    x = 234,470.20/636.16
  6. Step 6: Final answer
    x = 368.57

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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.