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Finding the Fourth Proportional to 1,135.92, 1,704.50 and 1,053.30

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Solution

The fourth proportional to 1,135.92, 1,704.50 and 1,053.30 is: 1,580.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,135.92 : 1,704.50 = 1,053.30 : x
  2. Step 2: Convert to fraction form
    1,135.92/1,704.50 = 1,053.30/x
  3. Step 3: Cross multiply
    1,135.92x = 1,704.50 × 1,053.30
  4. Step 4: Simplify right side
    1,135.92x = 1,795,344.58
  5. Step 5: Solve for x
    x = 1,795,344.58/1,135.92
  6. Step 6: Final answer
    x = 1,580.52

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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.