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Finding the Fourth Proportional to 592.97, 817.83 and 515.21

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Solution

The fourth proportional to 592.97, 817.83 and 515.21 is: 710.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    592.97 : 817.83 = 515.21 : x
  2. Step 2: Convert to fraction form
    592.97/817.83 = 515.21/x
  3. Step 3: Cross multiply
    592.97x = 817.83 × 515.21
  4. Step 4: Simplify right side
    592.97x = 421,350.11
  5. Step 5: Solve for x
    x = 421,350.11/592.97
  6. Step 6: Final answer
    x = 710.58

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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.