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Finding the Fourth Proportional to 516.93, 711.90 and 443.22

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Solution

The fourth proportional to 516.93, 711.90 and 443.22 is: 610.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    516.93 : 711.90 = 443.22 : x
  2. Step 2: Convert to fraction form
    516.93/711.90 = 443.22/x
  3. Step 3: Cross multiply
    516.93x = 711.90 × 443.22
  4. Step 4: Simplify right side
    516.93x = 315,528.32
  5. Step 5: Solve for x
    x = 315,528.32/516.93
  6. Step 6: Final answer
    x = 610.39

Related Problems

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Double scale
Find fourth proportional to 517.93, 713.28 and 444.22
Similar ratio
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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.