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Finding the Fourth Proportional to 932.51, 1,398.77 and 445.29

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Solution

The fourth proportional to 932.51, 1,398.77 and 445.29 is: 667.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    932.51 : 1,398.77 = 445.29 : x
  2. Step 2: Convert to fraction form
    932.51/1,398.77 = 445.29/x
  3. Step 3: Cross multiply
    932.51x = 1,398.77 × 445.29
  4. Step 4: Simplify right side
    932.51x = 622,856.07
  5. Step 5: Solve for x
    x = 622,856.07/932.51
  6. Step 6: Final answer
    x = 667.94

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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.