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Finding the Fourth Proportional to 1,093.62, 1,638.66 and 545.24

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Solution

The fourth proportional to 1,093.62, 1,638.66 and 545.24 is: 816.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,093.62 : 1,638.66 = 545.24 : x
  2. Step 2: Convert to fraction form
    1,093.62/1,638.66 = 545.24/x
  3. Step 3: Cross multiply
    1,093.62x = 1,638.66 × 545.24
  4. Step 4: Simplify right side
    1,093.62x = 893,462.98
  5. Step 5: Solve for x
    x = 893,462.98/1,093.62
  6. Step 6: Final answer
    x = 816.98

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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.