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Finding the Fourth Proportional to 1,052.36, 1,575.49 and 612.27

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Solution

The fourth proportional to 1,052.36, 1,575.49 and 612.27 is: 916.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,052.36 : 1,575.49 = 612.27 : x
  2. Step 2: Convert to fraction form
    1,052.36/1,575.49 = 612.27/x
  3. Step 3: Cross multiply
    1,052.36x = 1,575.49 × 612.27
  4. Step 4: Simplify right side
    1,052.36x = 964,622.20
  5. Step 5: Solve for x
    x = 964,622.20/1,052.36
  6. Step 6: Final answer
    x = 916.63

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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.