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Finding the Fourth Proportional to 1,188.35, 1,782.71 and 366.56

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Solution

The fourth proportional to 1,188.35, 1,782.71 and 366.56 is: 549.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188.35 : 1,782.71 = 366.56 : x
  2. Step 2: Convert to fraction form
    1,188.35/1,782.71 = 366.56/x
  3. Step 3: Cross multiply
    1,188.35x = 1,782.71 × 366.56
  4. Step 4: Simplify right side
    1,188.35x = 653,470.18
  5. Step 5: Solve for x
    x = 653,470.18/1,188.35
  6. Step 6: Final answer
    x = 549.90

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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.