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Finding the Fourth Proportional to 1,185.79, 1,778.69 and 364.07

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Solution

The fourth proportional to 1,185.79, 1,778.69 and 364.07 is: 546.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,185.79 : 1,778.69 = 364.07 : x
  2. Step 2: Convert to fraction form
    1,185.79/1,778.69 = 364.07/x
  3. Step 3: Cross multiply
    1,185.79x = 1,778.69 × 364.07
  4. Step 4: Simplify right side
    1,185.79x = 647,567.67
  5. Step 5: Solve for x
    x = 647,567.67/1,185.79
  6. Step 6: Final answer
    x = 546.11

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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.