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Finding the Fourth Proportional to 641, 884.60 and 365

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Solution

The fourth proportional to 641, 884.60 and 365 is: 503.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    641 : 884.60 = 365 : x
  2. Step 2: Convert to fraction form
    641/884.60 = 365/x
  3. Step 3: Cross multiply
    641x = 884.60 × 365
  4. Step 4: Simplify right side
    641x = 322,879
  5. Step 5: Solve for x
    x = 322,879/641
  6. Step 6: Final answer
    x = 503.71

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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.