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Finding the Fourth Proportional to 629.79, 938.40 and 601.85

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Solution

The fourth proportional to 629.79, 938.40 and 601.85 is: 896.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    629.79 : 938.40 = 601.85 : x
  2. Step 2: Convert to fraction form
    629.79/938.40 = 601.85/x
  3. Step 3: Cross multiply
    629.79x = 938.40 × 601.85
  4. Step 4: Simplify right side
    629.79x = 564,776.04
  5. Step 5: Solve for x
    x = 564,776.04/629.79
  6. Step 6: Final answer
    x = 896.77

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.