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Finding the Fourth Proportional to 1,195.60, 1,649.70 and 671.50

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Solution

The fourth proportional to 1,195.60, 1,649.70 and 671.50 is: 926.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,195.60 : 1,649.70 = 671.50 : x
  2. Step 2: Convert to fraction form
    1,195.60/1,649.70 = 671.50/x
  3. Step 3: Cross multiply
    1,195.60x = 1,649.70 × 671.50
  4. Step 4: Simplify right side
    1,195.60x = 1,107,773.55
  5. Step 5: Solve for x
    x = 1,107,773.55/1,195.60
  6. Step 6: Final answer
    x = 926.54

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.