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Finding the Fourth Proportional to 696.15, 1,043.55 and 623.25

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Solution

The fourth proportional to 696.15, 1,043.55 and 623.25 is: 934.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    696.15 : 1,043.55 = 623.25 : x
  2. Step 2: Convert to fraction form
    696.15/1,043.55 = 623.25/x
  3. Step 3: Cross multiply
    696.15x = 1,043.55 × 623.25
  4. Step 4: Simplify right side
    696.15x = 650,392.54
  5. Step 5: Solve for x
    x = 650,392.54/696.15
  6. Step 6: Final answer
    x = 934.27

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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.