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Finding the Fourth Proportional to 932.70, 1,287.03 and 672.06

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Solution

The fourth proportional to 932.70, 1,287.03 and 672.06 is: 927.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    932.70 : 1,287.03 = 672.06 : x
  2. Step 2: Convert to fraction form
    932.70/1,287.03 = 672.06/x
  3. Step 3: Cross multiply
    932.70x = 1,287.03 × 672.06
  4. Step 4: Simplify right side
    932.70x = 864,961.38
  5. Step 5: Solve for x
    x = 864,961.38/932.70
  6. Step 6: Final answer
    x = 927.37

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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.