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Finding the Fourth Proportional to 1,236.77, 1,854.87 and 359.27

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Solution

The fourth proportional to 1,236.77, 1,854.87 and 359.27 is: 538.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,236.77 : 1,854.87 = 359.27 : x
  2. Step 2: Convert to fraction form
    1,236.77/1,854.87 = 359.27/x
  3. Step 3: Cross multiply
    1,236.77x = 1,854.87 × 359.27
  4. Step 4: Simplify right side
    1,236.77x = 666,397.50
  5. Step 5: Solve for x
    x = 666,397.50/1,236.77
  6. Step 6: Final answer
    x = 538.82

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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.