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Finding the Fourth Proportional to 682.12, 941.28 and 383.32

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Solution

The fourth proportional to 682.12, 941.28 and 383.32 is: 528.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    682.12 : 941.28 = 383.32 : x
  2. Step 2: Convert to fraction form
    682.12/941.28 = 383.32/x
  3. Step 3: Cross multiply
    682.12x = 941.28 × 383.32
  4. Step 4: Simplify right side
    682.12x = 360,811.19
  5. Step 5: Solve for x
    x = 360,811.19/682.12
  6. Step 6: Final answer
    x = 528.95

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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.