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Finding the Fourth Proportional to 1,415.70, 2,122.53 and 952.33

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Solution

The fourth proportional to 1,415.70, 2,122.53 and 952.33 is: 1,427.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,415.70 : 2,122.53 = 952.33 : x
  2. Step 2: Convert to fraction form
    1,415.70/2,122.53 = 952.33/x
  3. Step 3: Cross multiply
    1,415.70x = 2,122.53 × 952.33
  4. Step 4: Simplify right side
    1,415.70x = 2,021,344.23
  5. Step 5: Solve for x
    x = 2,021,344.23/1,415.70
  6. Step 6: Final answer
    x = 1,427.81

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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.