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Finding the Fourth Proportional to 1,015.26, 1,522.17 and 552.66

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Solution

The fourth proportional to 1,015.26, 1,522.17 and 552.66 is: 828.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,015.26 : 1,522.17 = 552.66 : x
  2. Step 2: Convert to fraction form
    1,015.26/1,522.17 = 552.66/x
  3. Step 3: Cross multiply
    1,015.26x = 1,522.17 × 552.66
  4. Step 4: Simplify right side
    1,015.26x = 841,242.47
  5. Step 5: Solve for x
    x = 841,242.47/1,015.26
  6. Step 6: Final answer
    x = 828.60

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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.