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Finding the Fourth Proportional to 696.75, 1,045.25 and 264.21

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Solution

The fourth proportional to 696.75, 1,045.25 and 264.21 is: 396.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    696.75 : 1,045.25 = 264.21 : x
  2. Step 2: Convert to fraction form
    696.75/1,045.25 = 264.21/x
  3. Step 3: Cross multiply
    696.75x = 1,045.25 × 264.21
  4. Step 4: Simplify right side
    696.75x = 276,165.50
  5. Step 5: Solve for x
    x = 276,165.50/696.75
  6. Step 6: Final answer
    x = 396.36

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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.