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Finding the Fourth Proportional to 949.37, 1,423.44 and 623.75

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Solution

The fourth proportional to 949.37, 1,423.44 and 623.75 is: 935.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    949.37 : 1,423.44 = 623.75 : x
  2. Step 2: Convert to fraction form
    949.37/1,423.44 = 623.75/x
  3. Step 3: Cross multiply
    949.37x = 1,423.44 × 623.75
  4. Step 4: Simplify right side
    949.37x = 887,863.58
  5. Step 5: Solve for x
    x = 887,863.58/949.37
  6. Step 6: Final answer
    x = 935.22

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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.