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Finding the Fourth Proportional to 1,486.84, 2,230.32 and 755.44

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Solution

The fourth proportional to 1,486.84, 2,230.32 and 755.44 is: 1,133.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,486.84 : 2,230.32 = 755.44 : x
  2. Step 2: Convert to fraction form
    1,486.84/2,230.32 = 755.44/x
  3. Step 3: Cross multiply
    1,486.84x = 2,230.32 × 755.44
  4. Step 4: Simplify right side
    1,486.84x = 1,684,872.94
  5. Step 5: Solve for x
    x = 1,684,872.94/1,486.84
  6. Step 6: Final answer
    x = 1,133.19

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1.5x scale

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.