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Finding the Fourth Proportional to 1,235.37, 1,708.10 and 1,079.76

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Solution

The fourth proportional to 1,235.37, 1,708.10 and 1,079.76 is: 1,492.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,235.37 : 1,708.10 = 1,079.76 : x
  2. Step 2: Convert to fraction form
    1,235.37/1,708.10 = 1,079.76/x
  3. Step 3: Cross multiply
    1,235.37x = 1,708.10 × 1,079.76
  4. Step 4: Simplify right side
    1,235.37x = 1,844,338.06
  5. Step 5: Solve for x
    x = 1,844,338.06/1,235.37
  6. Step 6: Final answer
    x = 1,492.94

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.