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Finding the Fourth Proportional to 376.32, 518.16 and 358.08

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Solution

The fourth proportional to 376.32, 518.16 and 358.08 is: 493.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    376.32 : 518.16 = 358.08 : x
  2. Step 2: Convert to fraction form
    376.32/518.16 = 358.08/x
  3. Step 3: Cross multiply
    376.32x = 518.16 × 358.08
  4. Step 4: Simplify right side
    376.32x = 185,542.73
  5. Step 5: Solve for x
    x = 185,542.73/376.32
  6. Step 6: Final answer
    x = 493.05

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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.