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Finding the Fourth Proportional to 1,236.33, 1,852.40 and 577.13

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Solution

The fourth proportional to 1,236.33, 1,852.40 and 577.13 is: 864.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,236.33 : 1,852.40 = 577.13 : x
  2. Step 2: Convert to fraction form
    1,236.33/1,852.40 = 577.13/x
  3. Step 3: Cross multiply
    1,236.33x = 1,852.40 × 577.13
  4. Step 4: Simplify right side
    1,236.33x = 1,069,067.79
  5. Step 5: Solve for x
    x = 1,069,067.79/1,236.33
  6. Step 6: Final answer
    x = 864.71

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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.