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Finding the Fourth Proportional to 641.08, 883.40 and 463.73

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Solution

The fourth proportional to 641.08, 883.40 and 463.73 is: 639.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    641.08 : 883.40 = 463.73 : x
  2. Step 2: Convert to fraction form
    641.08/883.40 = 463.73/x
  3. Step 3: Cross multiply
    641.08x = 883.40 × 463.73
  4. Step 4: Simplify right side
    641.08x = 409,660.22
  5. Step 5: Solve for x
    x = 409,660.22/641.08
  6. Step 6: Final answer
    x = 639.01

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.