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Finding the Fourth Proportional to 1,188.38, 1,782.63 and 366.74

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Solution

The fourth proportional to 1,188.38, 1,782.63 and 366.74 is: 550.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188.38 : 1,782.63 = 366.74 : x
  2. Step 2: Convert to fraction form
    1,188.38/1,782.63 = 366.74/x
  3. Step 3: Cross multiply
    1,188.38x = 1,782.63 × 366.74
  4. Step 4: Simplify right side
    1,188.38x = 653,750.98
  5. Step 5: Solve for x
    x = 653,750.98/1,188.38
  6. Step 6: Final answer
    x = 550.12

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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.