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Finding the Fourth Proportional to 744.64, 1,027.02 and 694.96

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Solution

The fourth proportional to 744.64, 1,027.02 and 694.96 is: 958.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    744.64 : 1,027.02 = 694.96 : x
  2. Step 2: Convert to fraction form
    744.64/1,027.02 = 694.96/x
  3. Step 3: Cross multiply
    744.64x = 1,027.02 × 694.96
  4. Step 4: Simplify right side
    744.64x = 713,737.82
  5. Step 5: Solve for x
    x = 713,737.82/744.64
  6. Step 6: Final answer
    x = 958.50

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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.