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Finding the Fourth Proportional to 562.79, 844.42 and 515.03

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Solution

The fourth proportional to 562.79, 844.42 and 515.03 is: 772.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    562.79 : 844.42 = 515.03 : x
  2. Step 2: Convert to fraction form
    562.79/844.42 = 515.03/x
  3. Step 3: Cross multiply
    562.79x = 844.42 × 515.03
  4. Step 4: Simplify right side
    562.79x = 434,901.63
  5. Step 5: Solve for x
    x = 434,901.63/562.79
  6. Step 6: Final answer
    x = 772.76

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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.