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Finding the Fourth Proportional to 996.91, 1,498.02 and 510.28

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Solution

The fourth proportional to 996.91, 1,498.02 and 510.28 is: 766.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    996.91 : 1,498.02 = 510.28 : x
  2. Step 2: Convert to fraction form
    996.91/1,498.02 = 510.28/x
  3. Step 3: Cross multiply
    996.91x = 1,498.02 × 510.28
  4. Step 4: Simplify right side
    996.91x = 764,409.65
  5. Step 5: Solve for x
    x = 764,409.65/996.91
  6. Step 6: Final answer
    x = 766.78

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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.