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Finding the Fourth Proportional to 1,192.89, 1,790.07 and 576.66

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Solution

The fourth proportional to 1,192.89, 1,790.07 and 576.66 is: 865.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,192.89 : 1,790.07 = 576.66 : x
  2. Step 2: Convert to fraction form
    1,192.89/1,790.07 = 576.66/x
  3. Step 3: Cross multiply
    1,192.89x = 1,790.07 × 576.66
  4. Step 4: Simplify right side
    1,192.89x = 1,032,261.77
  5. Step 5: Solve for x
    x = 1,032,261.77/1,192.89
  6. Step 6: Final answer
    x = 865.35

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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.