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Finding the Fourth Proportional to 1,175.86, 1,764.08 and 354.15

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Solution

The fourth proportional to 1,175.86, 1,764.08 and 354.15 is: 531.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,175.86 : 1,764.08 = 354.15 : x
  2. Step 2: Convert to fraction form
    1,175.86/1,764.08 = 354.15/x
  3. Step 3: Cross multiply
    1,175.86x = 1,764.08 × 354.15
  4. Step 4: Simplify right side
    1,175.86x = 624,748.93
  5. Step 5: Solve for x
    x = 624,748.93/1,175.86
  6. Step 6: Final answer
    x = 531.31

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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.