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Finding the Fourth Proportional to 518.80, 716.16 and 344.38

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Solution

The fourth proportional to 518.80, 716.16 and 344.38 is: 475.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    518.80 : 716.16 = 344.38 : x
  2. Step 2: Convert to fraction form
    518.80/716.16 = 344.38/x
  3. Step 3: Cross multiply
    518.80x = 716.16 × 344.38
  4. Step 4: Simplify right side
    518.80x = 246,631.18
  5. Step 5: Solve for x
    x = 246,631.18/518.80
  6. Step 6: Final answer
    x = 475.39

Related Problems

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1.5x scale

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.