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Finding the Fourth Proportional to 1,144.77, 1,723.88 and 822.39

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Solution

The fourth proportional to 1,144.77, 1,723.88 and 822.39 is: 1,238.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,144.77 : 1,723.88 = 822.39 : x
  2. Step 2: Convert to fraction form
    1,144.77/1,723.88 = 822.39/x
  3. Step 3: Cross multiply
    1,144.77x = 1,723.88 × 822.39
  4. Step 4: Simplify right side
    1,144.77x = 1,417,697.56
  5. Step 5: Solve for x
    x = 1,417,697.56/1,144.77
  6. Step 6: Final answer
    x = 1,238.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.