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Finding the Fourth Proportional to 518.69, 714.81 and 371.07

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Solution

The fourth proportional to 518.69, 714.81 and 371.07 is: 511.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    518.69 : 714.81 = 371.07 : x
  2. Step 2: Convert to fraction form
    518.69/714.81 = 371.07/x
  3. Step 3: Cross multiply
    518.69x = 714.81 × 371.07
  4. Step 4: Simplify right side
    518.69x = 265,241.83
  5. Step 5: Solve for x
    x = 265,241.83/518.69
  6. Step 6: Final answer
    x = 511.37

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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.