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Finding the Fourth Proportional to 1,493.54, 2,238.62 and 761.57

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Solution

The fourth proportional to 1,493.54, 2,238.62 and 761.57 is: 1,141.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,493.54 : 2,238.62 = 761.57 : x
  2. Step 2: Convert to fraction form
    1,493.54/2,238.62 = 761.57/x
  3. Step 3: Cross multiply
    1,493.54x = 2,238.62 × 761.57
  4. Step 4: Simplify right side
    1,493.54x = 1,704,873.33
  5. Step 5: Solve for x
    x = 1,704,873.33/1,493.54
  6. Step 6: Final answer
    x = 1,141.50

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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.