Home / 1,276.14-1,914.42-454.92

Finding the Fourth Proportional to 1,276.14, 1,914.42 and 454.92

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Solution

The fourth proportional to 1,276.14, 1,914.42 and 454.92 is: 682.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,276.14 : 1,914.42 = 454.92 : x
  2. Step 2: Convert to fraction form
    1,276.14/1,914.42 = 454.92/x
  3. Step 3: Cross multiply
    1,276.14x = 1,914.42 × 454.92
  4. Step 4: Simplify right side
    1,276.14x = 870,907.95
  5. Step 5: Solve for x
    x = 870,907.95/1,276.14
  6. Step 6: Final answer
    x = 682.45

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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.