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Finding the Fourth Proportional to 890.75, 1,226.33 and 774.27

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Solution

The fourth proportional to 890.75, 1,226.33 and 774.27 is: 1,065.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    890.75 : 1,226.33 = 774.27 : x
  2. Step 2: Convert to fraction form
    890.75/1,226.33 = 774.27/x
  3. Step 3: Cross multiply
    890.75x = 1,226.33 × 774.27
  4. Step 4: Simplify right side
    890.75x = 949,510.53
  5. Step 5: Solve for x
    x = 949,510.53/890.75
  6. Step 6: Final answer
    x = 1,065.97

Related Problems

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Half scale
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Double scale
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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.