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Finding the Fourth Proportional to 681.75, 940.76 and 383.01

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Solution

The fourth proportional to 681.75, 940.76 and 383.01 is: 528.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    681.75 : 940.76 = 383.01 : x
  2. Step 2: Convert to fraction form
    681.75/940.76 = 383.01/x
  3. Step 3: Cross multiply
    681.75x = 940.76 × 383.01
  4. Step 4: Simplify right side
    681.75x = 360,318.57
  5. Step 5: Solve for x
    x = 360,318.57/681.75
  6. Step 6: Final answer
    x = 528.52

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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.