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Finding the Fourth Proportional to 636.66, 953.58 and 619.44

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Solution

The fourth proportional to 636.66, 953.58 and 619.44 is: 927.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    636.66 : 953.58 = 619.44 : x
  2. Step 2: Convert to fraction form
    636.66/953.58 = 619.44/x
  3. Step 3: Cross multiply
    636.66x = 953.58 × 619.44
  4. Step 4: Simplify right side
    636.66x = 590,685.60
  5. Step 5: Solve for x
    x = 590,685.60/636.66
  6. Step 6: Final answer
    x = 927.79

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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.