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Finding the Fourth Proportional to 539.11, 742.93 and 383.59

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Solution

The fourth proportional to 539.11, 742.93 and 383.59 is: 528.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    539.11 : 742.93 = 383.59 : x
  2. Step 2: Convert to fraction form
    539.11/742.93 = 383.59/x
  3. Step 3: Cross multiply
    539.11x = 742.93 × 383.59
  4. Step 4: Simplify right side
    539.11x = 284,980.52
  5. Step 5: Solve for x
    x = 284,980.52/539.11
  6. Step 6: Final answer
    x = 528.61

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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.