Home / 1,270.43-1,905.05-577.07

Finding the Fourth Proportional to 1,270.43, 1,905.05 and 577.07

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Solution

The fourth proportional to 1,270.43, 1,905.05 and 577.07 is: 865.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,270.43 : 1,905.05 = 577.07 : x
  2. Step 2: Convert to fraction form
    1,270.43/1,905.05 = 577.07/x
  3. Step 3: Cross multiply
    1,270.43x = 1,905.05 × 577.07
  4. Step 4: Simplify right side
    1,270.43x = 1,099,337.68
  5. Step 5: Solve for x
    x = 1,099,337.68/1,270.43
  6. Step 6: Final answer
    x = 865.33

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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.