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Finding the Fourth Proportional to 636.29, 947.33 and 627.18

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Solution

The fourth proportional to 636.29, 947.33 and 627.18 is: 933.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    636.29 : 947.33 = 627.18 : x
  2. Step 2: Convert to fraction form
    636.29/947.33 = 627.18/x
  3. Step 3: Cross multiply
    636.29x = 947.33 × 627.18
  4. Step 4: Simplify right side
    636.29x = 594,141.69
  5. Step 5: Solve for x
    x = 594,141.69/636.29
  6. Step 6: Final answer
    x = 933.76

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.