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Finding the Fourth Proportional to 1,186.43, 1,779.81 and 364.77

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Solution

The fourth proportional to 1,186.43, 1,779.81 and 364.77 is: 547.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,186.43 : 1,779.81 = 364.77 : x
  2. Step 2: Convert to fraction form
    1,186.43/1,779.81 = 364.77/x
  3. Step 3: Cross multiply
    1,186.43x = 1,779.81 × 364.77
  4. Step 4: Simplify right side
    1,186.43x = 649,221.98
  5. Step 5: Solve for x
    x = 649,221.98/1,186.43
  6. Step 6: Final answer
    x = 547.21

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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.