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Finding the Fourth Proportional to 984.26, 1,475.49 and 637.72

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Solution

The fourth proportional to 984.26, 1,475.49 and 637.72 is: 956.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    984.26 : 1,475.49 = 637.72 : x
  2. Step 2: Convert to fraction form
    984.26/1,475.49 = 637.72/x
  3. Step 3: Cross multiply
    984.26x = 1,475.49 × 637.72
  4. Step 4: Simplify right side
    984.26x = 940,949.48
  5. Step 5: Solve for x
    x = 940,949.48/984.26
  6. Step 6: Final answer
    x = 956.00

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.