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Finding the Fourth Proportional to 1,056.25, 1,456.44 and 682.74

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Solution

The fourth proportional to 1,056.25, 1,456.44 and 682.74 is: 941.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,056.25 : 1,456.44 = 682.74 : x
  2. Step 2: Convert to fraction form
    1,056.25/1,456.44 = 682.74/x
  3. Step 3: Cross multiply
    1,056.25x = 1,456.44 × 682.74
  4. Step 4: Simplify right side
    1,056.25x = 994,369.85
  5. Step 5: Solve for x
    x = 994,369.85/1,056.25
  6. Step 6: Final answer
    x = 941.42

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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.