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Finding the Fourth Proportional to 1,135.92, 1,704.10 and 442.56

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Solution

The fourth proportional to 1,135.92, 1,704.10 and 442.56 is: 663.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,135.92 : 1,704.10 = 442.56 : x
  2. Step 2: Convert to fraction form
    1,135.92/1,704.10 = 442.56/x
  3. Step 3: Cross multiply
    1,135.92x = 1,704.10 × 442.56
  4. Step 4: Simplify right side
    1,135.92x = 754,166.50
  5. Step 5: Solve for x
    x = 754,166.50/1,135.92
  6. Step 6: Final answer
    x = 663.93

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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.