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Finding the Fourth Proportional to 994.48, 1,490.68 and 335.86

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Solution

The fourth proportional to 994.48, 1,490.68 and 335.86 is: 503.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    994.48 : 1,490.68 = 335.86 : x
  2. Step 2: Convert to fraction form
    994.48/1,490.68 = 335.86/x
  3. Step 3: Cross multiply
    994.48x = 1,490.68 × 335.86
  4. Step 4: Simplify right side
    994.48x = 500,659.78
  5. Step 5: Solve for x
    x = 500,659.78/994.48
  6. Step 6: Final answer
    x = 503.44

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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.