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Finding the Fourth Proportional to 516.01, 712.23 and 319.45

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Solution

The fourth proportional to 516.01, 712.23 and 319.45 is: 440.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    516.01 : 712.23 = 319.45 : x
  2. Step 2: Convert to fraction form
    516.01/712.23 = 319.45/x
  3. Step 3: Cross multiply
    516.01x = 712.23 × 319.45
  4. Step 4: Simplify right side
    516.01x = 227,521.87
  5. Step 5: Solve for x
    x = 227,521.87/516.01
  6. Step 6: Final answer
    x = 440.93

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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.