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Finding the Fourth Proportional to 696.87, 966.66 and 659.97

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Solution

The fourth proportional to 696.87, 966.66 and 659.97 is: 915.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    696.87 : 966.66 = 659.97 : x
  2. Step 2: Convert to fraction form
    696.87/966.66 = 659.97/x
  3. Step 3: Cross multiply
    696.87x = 966.66 × 659.97
  4. Step 4: Simplify right side
    696.87x = 637,966.60
  5. Step 5: Solve for x
    x = 637,966.60/696.87
  6. Step 6: Final answer
    x = 915.47

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