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Finding the Fourth Proportional to 1,195.58, 1,794.03 and 647.75

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Solution

The fourth proportional to 1,195.58, 1,794.03 and 647.75 is: 971.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,195.58 : 1,794.03 = 647.75 : x
  2. Step 2: Convert to fraction form
    1,195.58/1,794.03 = 647.75/x
  3. Step 3: Cross multiply
    1,195.58x = 1,794.03 × 647.75
  4. Step 4: Simplify right side
    1,195.58x = 1,162,082.93
  5. Step 5: Solve for x
    x = 1,162,082.93/1,195.58
  6. Step 6: Final answer
    x = 971.98

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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.