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Finding the Fourth Proportional to 723.04, 994.74 and 629.32

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Solution

The fourth proportional to 723.04, 994.74 and 629.32 is: 865.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    723.04 : 994.74 = 629.32 : x
  2. Step 2: Convert to fraction form
    723.04/994.74 = 629.32/x
  3. Step 3: Cross multiply
    723.04x = 994.74 × 629.32
  4. Step 4: Simplify right side
    723.04x = 626,009.78
  5. Step 5: Solve for x
    x = 626,009.78/723.04
  6. Step 6: Final answer
    x = 865.80

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.