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Finding the Fourth Proportional to 664.79, 996.31 and 510.13

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Solution

The fourth proportional to 664.79, 996.31 and 510.13 is: 764.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    664.79 : 996.31 = 510.13 : x
  2. Step 2: Convert to fraction form
    664.79/996.31 = 510.13/x
  3. Step 3: Cross multiply
    664.79x = 996.31 × 510.13
  4. Step 4: Simplify right side
    664.79x = 508,240.09
  5. Step 5: Solve for x
    x = 508,240.09/664.79
  6. Step 6: Final answer
    x = 764.51

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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.