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Finding the Fourth Proportional to 636.07, 954.10 and 418.07

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Solution

The fourth proportional to 636.07, 954.10 and 418.07 is: 627.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    636.07 : 954.10 = 418.07 : x
  2. Step 2: Convert to fraction form
    636.07/954.10 = 418.07/x
  3. Step 3: Cross multiply
    636.07x = 954.10 × 418.07
  4. Step 4: Simplify right side
    636.07x = 398,881.93
  5. Step 5: Solve for x
    x = 398,881.93/636.07
  6. Step 6: Final answer
    x = 627.11

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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.