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Finding the Fourth Proportional to 539.24, 809.43 and 477.93

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Solution

The fourth proportional to 539.24, 809.43 and 477.93 is: 717.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    539.24 : 809.43 = 477.93 : x
  2. Step 2: Convert to fraction form
    539.24/809.43 = 477.93/x
  3. Step 3: Cross multiply
    539.24x = 809.43 × 477.93
  4. Step 4: Simplify right side
    539.24x = 386,852.12
  5. Step 5: Solve for x
    x = 386,852.12/539.24
  6. Step 6: Final answer
    x = 717.40

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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.