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Finding the Fourth Proportional to 565.17, 779.87 and 329.09

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Solution

The fourth proportional to 565.17, 779.87 and 329.09 is: 454.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    565.17 : 779.87 = 329.09 : x
  2. Step 2: Convert to fraction form
    565.17/779.87 = 329.09/x
  3. Step 3: Cross multiply
    565.17x = 779.87 × 329.09
  4. Step 4: Simplify right side
    565.17x = 256,641.87
  5. Step 5: Solve for x
    x = 256,641.87/565.17
  6. Step 6: Final answer
    x = 454.10

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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.