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Finding the Fourth Proportional to 641.34, 884.34 and 552.74

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Solution

The fourth proportional to 641.34, 884.34 and 552.74 is: 762.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    641.34 : 884.34 = 552.74 : x
  2. Step 2: Convert to fraction form
    641.34/884.34 = 552.74/x
  3. Step 3: Cross multiply
    641.34x = 884.34 × 552.74
  4. Step 4: Simplify right side
    641.34x = 488,805.67
  5. Step 5: Solve for x
    x = 488,805.67/641.34
  6. Step 6: Final answer
    x = 762.16

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1.5x scale

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.