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Finding the Fourth Proportional to 1,166.72, 1,750.40 and 397.12

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Solution

The fourth proportional to 1,166.72, 1,750.40 and 397.12 is: 595.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,166.72 : 1,750.40 = 397.12 : x
  2. Step 2: Convert to fraction form
    1,166.72/1,750.40 = 397.12/x
  3. Step 3: Cross multiply
    1,166.72x = 1,750.40 × 397.12
  4. Step 4: Simplify right side
    1,166.72x = 695,118.85
  5. Step 5: Solve for x
    x = 695,118.85/1,166.72
  6. Step 6: Final answer
    x = 595.79

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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.