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Finding the Fourth Proportional to 641.04, 884.73 and 475.02

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Solution

The fourth proportional to 641.04, 884.73 and 475.02 is: 655.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    641.04 : 884.73 = 475.02 : x
  2. Step 2: Convert to fraction form
    641.04/884.73 = 475.02/x
  3. Step 3: Cross multiply
    641.04x = 884.73 × 475.02
  4. Step 4: Simplify right side
    641.04x = 420,264.44
  5. Step 5: Solve for x
    x = 420,264.44/641.04
  6. Step 6: Final answer
    x = 655.60

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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.