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Finding the Fourth Proportional to 945.53, 1,418.52 and 670.79

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Solution

The fourth proportional to 945.53, 1,418.52 and 670.79 is: 1,006.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    945.53 : 1,418.52 = 670.79 : x
  2. Step 2: Convert to fraction form
    945.53/1,418.52 = 670.79/x
  3. Step 3: Cross multiply
    945.53x = 1,418.52 × 670.79
  4. Step 4: Simplify right side
    945.53x = 951,529.03
  5. Step 5: Solve for x
    x = 951,529.03/945.53
  6. Step 6: Final answer
    x = 1,006.34

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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.