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Finding the Fourth Proportional to 636.73, 953.88 and 555.33

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Solution

The fourth proportional to 636.73, 953.88 and 555.33 is: 831.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    636.73 : 953.88 = 555.33 : x
  2. Step 2: Convert to fraction form
    636.73/953.88 = 555.33/x
  3. Step 3: Cross multiply
    636.73x = 953.88 × 555.33
  4. Step 4: Simplify right side
    636.73x = 529,718.18
  5. Step 5: Solve for x
    x = 529,718.18/636.73
  6. Step 6: Final answer
    x = 831.94

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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.