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Finding the Fourth Proportional to 518.37, 716.29 and 370.75

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Solution

The fourth proportional to 518.37, 716.29 and 370.75 is: 512.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    518.37 : 716.29 = 370.75 : x
  2. Step 2: Convert to fraction form
    518.37/716.29 = 370.75/x
  3. Step 3: Cross multiply
    518.37x = 716.29 × 370.75
  4. Step 4: Simplify right side
    518.37x = 265,561.80
  5. Step 5: Solve for x
    x = 265,561.80/518.37
  6. Step 6: Final answer
    x = 512.30

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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.