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Finding the Fourth Proportional to 718.06, 1,076.85 and 230.99

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Solution

The fourth proportional to 718.06, 1,076.85 and 230.99 is: 346.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    718.06 : 1,076.85 = 230.99 : x
  2. Step 2: Convert to fraction form
    718.06/1,076.85 = 230.99/x
  3. Step 3: Cross multiply
    718.06x = 1,076.85 × 230.99
  4. Step 4: Simplify right side
    718.06x = 248,745.14
  5. Step 5: Solve for x
    x = 248,745.14/718.06
  6. Step 6: Final answer
    x = 346.41

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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.