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Finding the Fourth Proportional to 577.11, 865.98 and 330.63

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Solution

The fourth proportional to 577.11, 865.98 and 330.63 is: 496.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    577.11 : 865.98 = 330.63 : x
  2. Step 2: Convert to fraction form
    577.11/865.98 = 330.63/x
  3. Step 3: Cross multiply
    577.11x = 865.98 × 330.63
  4. Step 4: Simplify right side
    577.11x = 286,318.97
  5. Step 5: Solve for x
    x = 286,318.97/577.11
  6. Step 6: Final answer
    x = 496.13

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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.