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Finding the Fourth Proportional to 681.99, 940.99 and 471.83

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Solution

The fourth proportional to 681.99, 940.99 and 471.83 is: 651.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    681.99 : 940.99 = 471.83 : x
  2. Step 2: Convert to fraction form
    681.99/940.99 = 471.83/x
  3. Step 3: Cross multiply
    681.99x = 940.99 × 471.83
  4. Step 4: Simplify right side
    681.99x = 443,983.64
  5. Step 5: Solve for x
    x = 443,983.64/681.99
  6. Step 6: Final answer
    x = 651.01

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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.