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Finding the Fourth Proportional to 1,737.06, 2,605.68 and 438.54

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Solution

The fourth proportional to 1,737.06, 2,605.68 and 438.54 is: 657.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,737.06 : 2,605.68 = 438.54 : x
  2. Step 2: Convert to fraction form
    1,737.06/2,605.68 = 438.54/x
  3. Step 3: Cross multiply
    1,737.06x = 2,605.68 × 438.54
  4. Step 4: Simplify right side
    1,737.06x = 1,142,694.91
  5. Step 5: Solve for x
    x = 1,142,694.91/1,737.06
  6. Step 6: Final answer
    x = 657.83

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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.