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Finding the Fourth Proportional to 577.94, 865.08 and 395.69

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Solution

The fourth proportional to 577.94, 865.08 and 395.69 is: 592.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    577.94 : 865.08 = 395.69 : x
  2. Step 2: Convert to fraction form
    577.94/865.08 = 395.69/x
  3. Step 3: Cross multiply
    577.94x = 865.08 × 395.69
  4. Step 4: Simplify right side
    577.94x = 342,299.18
  5. Step 5: Solve for x
    x = 342,299.18/577.94
  6. Step 6: Final answer
    x = 592.28

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.