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Finding the Fourth Proportional to 1,131.40, 1,696.02 and 610.62

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Solution

The fourth proportional to 1,131.40, 1,696.02 and 610.62 is: 915.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,131.40 : 1,696.02 = 610.62 : x
  2. Step 2: Convert to fraction form
    1,131.40/1,696.02 = 610.62/x
  3. Step 3: Cross multiply
    1,131.40x = 1,696.02 × 610.62
  4. Step 4: Simplify right side
    1,131.40x = 1,035,623.73
  5. Step 5: Solve for x
    x = 1,035,623.73/1,131.40
  6. Step 6: Final answer
    x = 915.35

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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.