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Finding the Fourth Proportional to 518.87, 716.98 and 371.25

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Solution

The fourth proportional to 518.87, 716.98 and 371.25 is: 513.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    518.87 : 716.98 = 371.25 : x
  2. Step 2: Convert to fraction form
    518.87/716.98 = 371.25/x
  3. Step 3: Cross multiply
    518.87x = 716.98 × 371.25
  4. Step 4: Simplify right side
    518.87x = 266,178.83
  5. Step 5: Solve for x
    x = 266,178.83/518.87
  6. Step 6: Final answer
    x = 513.00

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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.