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Finding the Fourth Proportional to 1,201.92, 1,658.93 and 704.58

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Solution

The fourth proportional to 1,201.92, 1,658.93 and 704.58 is: 972.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,201.92 : 1,658.93 = 704.58 : x
  2. Step 2: Convert to fraction form
    1,201.92/1,658.93 = 704.58/x
  3. Step 3: Cross multiply
    1,201.92x = 1,658.93 × 704.58
  4. Step 4: Simplify right side
    1,201.92x = 1,168,845.38
  5. Step 5: Solve for x
    x = 1,168,845.38/1,201.92
  6. Step 6: Final answer
    x = 972.48

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.