Home / 1,276.48-1,914.37-454.65

Finding the Fourth Proportional to 1,276.48, 1,914.37 and 454.65

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Solution

The fourth proportional to 1,276.48, 1,914.37 and 454.65 is: 681.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,276.48 : 1,914.37 = 454.65 : x
  2. Step 2: Convert to fraction form
    1,276.48/1,914.37 = 454.65/x
  3. Step 3: Cross multiply
    1,276.48x = 1,914.37 × 454.65
  4. Step 4: Simplify right side
    1,276.48x = 870,368.32
  5. Step 5: Solve for x
    x = 870,368.32/1,276.48
  6. Step 6: Final answer
    x = 681.85

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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.