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Finding the Fourth Proportional to 712.30, 1,068.48 and 225.37

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Solution

The fourth proportional to 712.30, 1,068.48 and 225.37 is: 338.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    712.30 : 1,068.48 = 225.37 : x
  2. Step 2: Convert to fraction form
    712.30/1,068.48 = 225.37/x
  3. Step 3: Cross multiply
    712.30x = 1,068.48 × 225.37
  4. Step 4: Simplify right side
    712.30x = 240,803.34
  5. Step 5: Solve for x
    x = 240,803.34/712.30
  6. Step 6: Final answer
    x = 338.06

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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.