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Finding the Fourth Proportional to 925.56, 1,376.60 and 906.12

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Solution

The fourth proportional to 925.56, 1,376.60 and 906.12 is: 1,347.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    925.56 : 1,376.60 = 906.12 : x
  2. Step 2: Convert to fraction form
    925.56/1,376.60 = 906.12/x
  3. Step 3: Cross multiply
    925.56x = 1,376.60 × 906.12
  4. Step 4: Simplify right side
    925.56x = 1,247,360.26
  5. Step 5: Solve for x
    x = 1,247,360.26/925.56
  6. Step 6: Final answer
    x = 1,347.68

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.