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Finding the Fourth Proportional to 665.63, 996.38 and 608.93

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Solution

The fourth proportional to 665.63, 996.38 and 608.93 is: 911.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    665.63 : 996.38 = 608.93 : x
  2. Step 2: Convert to fraction form
    665.63/996.38 = 608.93/x
  3. Step 3: Cross multiply
    665.63x = 996.38 × 608.93
  4. Step 4: Simplify right side
    665.63x = 606,722.21
  5. Step 5: Solve for x
    x = 606,722.21/665.63
  6. Step 6: Final answer
    x = 911.51

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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.