Home / 1,276.51-1,914.76-443.60

Finding the Fourth Proportional to 1,276.51, 1,914.76 and 443.60

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Solution

The fourth proportional to 1,276.51, 1,914.76 and 443.60 is: 665.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,276.51 : 1,914.76 = 443.60 : x
  2. Step 2: Convert to fraction form
    1,276.51/1,914.76 = 443.60/x
  3. Step 3: Cross multiply
    1,276.51x = 1,914.76 × 443.60
  4. Step 4: Simplify right side
    1,276.51x = 849,392.33
  5. Step 5: Solve for x
    x = 849,392.33/1,276.51
  6. Step 6: Final answer
    x = 665.40

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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.