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Finding the Fourth Proportional to 1,230.96, 1,706.06 and 1,207.92

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Solution

The fourth proportional to 1,230.96, 1,706.06 and 1,207.92 is: 1,674.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,230.96 : 1,706.06 = 1,207.92 : x
  2. Step 2: Convert to fraction form
    1,230.96/1,706.06 = 1,207.92/x
  3. Step 3: Cross multiply
    1,230.96x = 1,706.06 × 1,207.92
  4. Step 4: Simplify right side
    1,230.96x = 2,060,784.00
  5. Step 5: Solve for x
    x = 2,060,784.00/1,230.96
  6. Step 6: Final answer
    x = 1,674.13

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.