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Finding the Fourth Proportional to 939.94, 1,410 and 246.61

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Solution

The fourth proportional to 939.94, 1,410 and 246.61 is: 369.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    939.94 : 1,410 = 246.61 : x
  2. Step 2: Convert to fraction form
    939.94/1,410 = 246.61/x
  3. Step 3: Cross multiply
    939.94x = 1,410 × 246.61
  4. Step 4: Simplify right side
    939.94x = 347,720.10
  5. Step 5: Solve for x
    x = 347,720.10/939.94
  6. Step 6: Final answer
    x = 369.94

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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.