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Finding the Fourth Proportional to 516.95, 713.40 and 295.91

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Solution

The fourth proportional to 516.95, 713.40 and 295.91 is: 408.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    516.95 : 713.40 = 295.91 : x
  2. Step 2: Convert to fraction form
    516.95/713.40 = 295.91/x
  3. Step 3: Cross multiply
    516.95x = 713.40 × 295.91
  4. Step 4: Simplify right side
    516.95x = 211,102.19
  5. Step 5: Solve for x
    x = 211,102.19/516.95
  6. Step 6: Final answer
    x = 408.36

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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.