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Finding the Fourth Proportional to 889.58, 1,333.29 and 629.66

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Solution

The fourth proportional to 889.58, 1,333.29 and 629.66 is: 943.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    889.58 : 1,333.29 = 629.66 : x
  2. Step 2: Convert to fraction form
    889.58/1,333.29 = 629.66/x
  3. Step 3: Cross multiply
    889.58x = 1,333.29 × 629.66
  4. Step 4: Simplify right side
    889.58x = 839,509.57
  5. Step 5: Solve for x
    x = 839,509.57/889.58
  6. Step 6: Final answer
    x = 943.72

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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.