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Finding the Fourth Proportional to 993.46, 1,490.22 and 335.38

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Solution

The fourth proportional to 993.46, 1,490.22 and 335.38 is: 503.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    993.46 : 1,490.22 = 335.38 : x
  2. Step 2: Convert to fraction form
    993.46/1,490.22 = 335.38/x
  3. Step 3: Cross multiply
    993.46x = 1,490.22 × 335.38
  4. Step 4: Simplify right side
    993.46x = 499,789.98
  5. Step 5: Solve for x
    x = 499,789.98/993.46
  6. Step 6: Final answer
    x = 503.08

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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.