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Finding the Fourth Proportional to 1,135.94, 1,703.39 and 442.08

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Solution

The fourth proportional to 1,135.94, 1,703.39 and 442.08 is: 662.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,135.94 : 1,703.39 = 442.08 : x
  2. Step 2: Convert to fraction form
    1,135.94/1,703.39 = 442.08/x
  3. Step 3: Cross multiply
    1,135.94x = 1,703.39 × 442.08
  4. Step 4: Simplify right side
    1,135.94x = 753,032.44
  5. Step 5: Solve for x
    x = 753,032.44/1,135.94
  6. Step 6: Final answer
    x = 662.92

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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.