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Finding the Fourth Proportional to 1,228.37, 1,695.74 and 896.27

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Solution

The fourth proportional to 1,228.37, 1,695.74 and 896.27 is: 1,237.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,228.37 : 1,695.74 = 896.27 : x
  2. Step 2: Convert to fraction form
    1,228.37/1,695.74 = 896.27/x
  3. Step 3: Cross multiply
    1,228.37x = 1,695.74 × 896.27
  4. Step 4: Simplify right side
    1,228.37x = 1,519,827.93
  5. Step 5: Solve for x
    x = 1,519,827.93/1,228.37
  6. Step 6: Final answer
    x = 1,237.28

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1.5x scale

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.