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Finding the Fourth Proportional to 1,093.42, 1,638.13 and 572.88

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Solution

The fourth proportional to 1,093.42, 1,638.13 and 572.88 is: 858.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,093.42 : 1,638.13 = 572.88 : x
  2. Step 2: Convert to fraction form
    1,093.42/1,638.13 = 572.88/x
  3. Step 3: Cross multiply
    1,093.42x = 1,638.13 × 572.88
  4. Step 4: Simplify right side
    1,093.42x = 938,451.91
  5. Step 5: Solve for x
    x = 938,451.91/1,093.42
  6. Step 6: Final answer
    x = 858.27

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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.