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Finding the Fourth Proportional to 1,364.60, 2,046.66 and 486.96

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Solution

The fourth proportional to 1,364.60, 2,046.66 and 486.96 is: 730.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,364.60 : 2,046.66 = 486.96 : x
  2. Step 2: Convert to fraction form
    1,364.60/2,046.66 = 486.96/x
  3. Step 3: Cross multiply
    1,364.60x = 2,046.66 × 486.96
  4. Step 4: Simplify right side
    1,364.60x = 996,641.55
  5. Step 5: Solve for x
    x = 996,641.55/1,364.60
  6. Step 6: Final answer
    x = 730.35

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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.