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Finding the Fourth Proportional to 944.43, 1,303.52 and 645.54

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Solution

The fourth proportional to 944.43, 1,303.52 and 645.54 is: 890.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    944.43 : 1,303.52 = 645.54 : x
  2. Step 2: Convert to fraction form
    944.43/1,303.52 = 645.54/x
  3. Step 3: Cross multiply
    944.43x = 1,303.52 × 645.54
  4. Step 4: Simplify right side
    944.43x = 841,474.30
  5. Step 5: Solve for x
    x = 841,474.30/944.43
  6. Step 6: Final answer
    x = 890.99

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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.