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Finding the Fourth Proportional to 1,076.85, 1,486.05 and 604.75

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Solution

The fourth proportional to 1,076.85, 1,486.05 and 604.75 is: 834.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,076.85 : 1,486.05 = 604.75 : x
  2. Step 2: Convert to fraction form
    1,076.85/1,486.05 = 604.75/x
  3. Step 3: Cross multiply
    1,076.85x = 1,486.05 × 604.75
  4. Step 4: Simplify right side
    1,076.85x = 898,688.74
  5. Step 5: Solve for x
    x = 898,688.74/1,076.85
  6. Step 6: Final answer
    x = 834.55

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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.