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Finding the Fourth Proportional to 1,275.27, 1,759.77 and 832.47

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Solution

The fourth proportional to 1,275.27, 1,759.77 and 832.47 is: 1,148.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,275.27 : 1,759.77 = 832.47 : x
  2. Step 2: Convert to fraction form
    1,275.27/1,759.77 = 832.47/x
  3. Step 3: Cross multiply
    1,275.27x = 1,759.77 × 832.47
  4. Step 4: Simplify right side
    1,275.27x = 1,464,955.73
  5. Step 5: Solve for x
    x = 1,464,955.73/1,275.27
  6. Step 6: Final answer
    x = 1,148.74

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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.