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Finding the Fourth Proportional to 561.15, 844.16 and 516.20

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Solution

The fourth proportional to 561.15, 844.16 and 516.20 is: 776.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    561.15 : 844.16 = 516.20 : x
  2. Step 2: Convert to fraction form
    561.15/844.16 = 516.20/x
  3. Step 3: Cross multiply
    561.15x = 844.16 × 516.20
  4. Step 4: Simplify right side
    561.15x = 435,748.59
  5. Step 5: Solve for x
    x = 435,748.59/561.15
  6. Step 6: Final answer
    x = 776.53

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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.