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Finding the Fourth Proportional to 703.81, 971.52 and 629.99

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Solution

The fourth proportional to 703.81, 971.52 and 629.99 is: 869.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    703.81 : 971.52 = 629.99 : x
  2. Step 2: Convert to fraction form
    703.81/971.52 = 629.99/x
  3. Step 3: Cross multiply
    703.81x = 971.52 × 629.99
  4. Step 4: Simplify right side
    703.81x = 612,047.88
  5. Step 5: Solve for x
    x = 612,047.88/703.81
  6. Step 6: Final answer
    x = 869.63

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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.