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Finding the Fourth Proportional to 1,100.86, 1,650.88 and 360.30

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Solution

The fourth proportional to 1,100.86, 1,650.88 and 360.30 is: 540.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,100.86 : 1,650.88 = 360.30 : x
  2. Step 2: Convert to fraction form
    1,100.86/1,650.88 = 360.30/x
  3. Step 3: Cross multiply
    1,100.86x = 1,650.88 × 360.30
  4. Step 4: Simplify right side
    1,100.86x = 594,812.06
  5. Step 5: Solve for x
    x = 594,812.06/1,100.86
  6. Step 6: Final answer
    x = 540.32

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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.