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Finding the Fourth Proportional to 1,015.33, 1,512.88 and 906.29

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Solution

The fourth proportional to 1,015.33, 1,512.88 and 906.29 is: 1,350.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,015.33 : 1,512.88 = 906.29 : x
  2. Step 2: Convert to fraction form
    1,015.33/1,512.88 = 906.29/x
  3. Step 3: Cross multiply
    1,015.33x = 1,512.88 × 906.29
  4. Step 4: Simplify right side
    1,015.33x = 1,371,100.45
  5. Step 5: Solve for x
    x = 1,371,100.45/1,015.33
  6. Step 6: Final answer
    x = 1,350.40

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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.