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Finding the Fourth Proportional to 1,176.68, 1,765.07 and 396.70

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Solution

The fourth proportional to 1,176.68, 1,765.07 and 396.70 is: 595.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,176.68 : 1,765.07 = 396.70 : x
  2. Step 2: Convert to fraction form
    1,176.68/1,765.07 = 396.70/x
  3. Step 3: Cross multiply
    1,176.68x = 1,765.07 × 396.70
  4. Step 4: Simplify right side
    1,176.68x = 700,192.46
  5. Step 5: Solve for x
    x = 700,192.46/1,176.68
  6. Step 6: Final answer
    x = 595.06

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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.