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Finding the Fourth Proportional to 1,232.72, 1,701.77 and 841.80

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Solution

The fourth proportional to 1,232.72, 1,701.77 and 841.80 is: 1,162.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,232.72 : 1,701.77 = 841.80 : x
  2. Step 2: Convert to fraction form
    1,232.72/1,701.77 = 841.80/x
  3. Step 3: Cross multiply
    1,232.72x = 1,701.77 × 841.80
  4. Step 4: Simplify right side
    1,232.72x = 1,432,545.78
  5. Step 5: Solve for x
    x = 1,432,545.78/1,232.72
  6. Step 6: Final answer
    x = 1,162.11

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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.