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Finding the Fourth Proportional to 945.56, 1,304.78 and 572.41

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Solution

The fourth proportional to 945.56, 1,304.78 and 572.41 is: 789.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    945.56 : 1,304.78 = 572.41 : x
  2. Step 2: Convert to fraction form
    945.56/1,304.78 = 572.41/x
  3. Step 3: Cross multiply
    945.56x = 1,304.78 × 572.41
  4. Step 4: Simplify right side
    945.56x = 746,867.29
  5. Step 5: Solve for x
    x = 746,867.29/945.56
  6. Step 6: Final answer
    x = 789.87

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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.