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Finding the Fourth Proportional to 1,275.34, 1,760.22 and 833.62

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Solution

The fourth proportional to 1,275.34, 1,760.22 and 833.62 is: 1,150.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,275.34 : 1,760.22 = 833.62 : x
  2. Step 2: Convert to fraction form
    1,275.34/1,760.22 = 833.62/x
  3. Step 3: Cross multiply
    1,275.34x = 1,760.22 × 833.62
  4. Step 4: Simplify right side
    1,275.34x = 1,467,354.60
  5. Step 5: Solve for x
    x = 1,467,354.60/1,275.34
  6. Step 6: Final answer
    x = 1,150.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.