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Finding the Fourth Proportional to 925.55, 1,388.33 and 885.56

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Solution

The fourth proportional to 925.55, 1,388.33 and 885.56 is: 1,328.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    925.55 : 1,388.33 = 885.56 : x
  2. Step 2: Convert to fraction form
    925.55/1,388.33 = 885.56/x
  3. Step 3: Cross multiply
    925.55x = 1,388.33 × 885.56
  4. Step 4: Simplify right side
    925.55x = 1,229,449.51
  5. Step 5: Solve for x
    x = 1,229,449.51/925.55
  6. Step 6: Final answer
    x = 1,328.34

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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.