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Finding the Fourth Proportional to 376.41, 518.58 and 317.19

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Solution

The fourth proportional to 376.41, 518.58 and 317.19 is: 436.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    376.41 : 518.58 = 317.19 : x
  2. Step 2: Convert to fraction form
    376.41/518.58 = 317.19/x
  3. Step 3: Cross multiply
    376.41x = 518.58 × 317.19
  4. Step 4: Simplify right side
    376.41x = 164,488.39
  5. Step 5: Solve for x
    x = 164,488.39/376.41
  6. Step 6: Final answer
    x = 436.99

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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.