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Finding the Fourth Proportional to 896.65, 1,237.95 and 803.23

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Solution

The fourth proportional to 896.65, 1,237.95 and 803.23 is: 1,108.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    896.65 : 1,237.95 = 803.23 : x
  2. Step 2: Convert to fraction form
    896.65/1,237.95 = 803.23/x
  3. Step 3: Cross multiply
    896.65x = 1,237.95 × 803.23
  4. Step 4: Simplify right side
    896.65x = 994,352.39
  5. Step 5: Solve for x
    x = 994,352.39/896.65
  6. Step 6: Final answer
    x = 1,108.97

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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.