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Finding the Fourth Proportional to 641.48, 884.57 and 501.35

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Solution

The fourth proportional to 641.48, 884.57 and 501.35 is: 691.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    641.48 : 884.57 = 501.35 : x
  2. Step 2: Convert to fraction form
    641.48/884.57 = 501.35/x
  3. Step 3: Cross multiply
    641.48x = 884.57 × 501.35
  4. Step 4: Simplify right side
    641.48x = 443,472.24
  5. Step 5: Solve for x
    x = 443,472.24/641.48
  6. Step 6: Final answer
    x = 691.33

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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.