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Finding the Fourth Proportional to 696.81, 1,045.33 and 234.63

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Solution

The fourth proportional to 696.81, 1,045.33 and 234.63 is: 351.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    696.81 : 1,045.33 = 234.63 : x
  2. Step 2: Convert to fraction form
    696.81/1,045.33 = 234.63/x
  3. Step 3: Cross multiply
    696.81x = 1,045.33 × 234.63
  4. Step 4: Simplify right side
    696.81x = 245,265.78
  5. Step 5: Solve for x
    x = 245,265.78/696.81
  6. Step 6: Final answer
    x = 351.98

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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.