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Finding the Fourth Proportional to 907.97, 1,254.14 and 672.26

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Solution

The fourth proportional to 907.97, 1,254.14 and 672.26 is: 928.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    907.97 : 1,254.14 = 672.26 : x
  2. Step 2: Convert to fraction form
    907.97/1,254.14 = 672.26/x
  3. Step 3: Cross multiply
    907.97x = 1,254.14 × 672.26
  4. Step 4: Simplify right side
    907.97x = 843,098.52
  5. Step 5: Solve for x
    x = 843,098.52/907.97
  6. Step 6: Final answer
    x = 928.56

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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.