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Finding the Fourth Proportional to 516.16, 770.36 and 446.44

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Solution

The fourth proportional to 516.16, 770.36 and 446.44 is: 666.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    516.16 : 770.36 = 446.44 : x
  2. Step 2: Convert to fraction form
    516.16/770.36 = 446.44/x
  3. Step 3: Cross multiply
    516.16x = 770.36 × 446.44
  4. Step 4: Simplify right side
    516.16x = 343,919.52
  5. Step 5: Solve for x
    x = 343,919.52/516.16
  6. Step 6: Final answer
    x = 666.30

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.