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Finding the Fourth Proportional to 955.44, 1,431.24 and 570.48

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Solution

The fourth proportional to 955.44, 1,431.24 and 570.48 is: 854.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    955.44 : 1,431.24 = 570.48 : x
  2. Step 2: Convert to fraction form
    955.44/1,431.24 = 570.48/x
  3. Step 3: Cross multiply
    955.44x = 1,431.24 × 570.48
  4. Step 4: Simplify right side
    955.44x = 816,493.80
  5. Step 5: Solve for x
    x = 816,493.80/955.44
  6. Step 6: Final answer
    x = 854.57

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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.