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Finding the Fourth Proportional to 664.02, 996.30 and 317.52

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Solution

The fourth proportional to 664.02, 996.30 and 317.52 is: 476.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    664.02 : 996.30 = 317.52 : x
  2. Step 2: Convert to fraction form
    664.02/996.30 = 317.52/x
  3. Step 3: Cross multiply
    664.02x = 996.30 × 317.52
  4. Step 4: Simplify right side
    664.02x = 316,345.18
  5. Step 5: Solve for x
    x = 316,345.18/664.02
  6. Step 6: Final answer
    x = 476.41

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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.