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Finding the Fourth Proportional to 738.68, 1,108.08 and 225.68

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Solution

The fourth proportional to 738.68, 1,108.08 and 225.68 is: 338.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    738.68 : 1,108.08 = 225.68 : x
  2. Step 2: Convert to fraction form
    738.68/1,108.08 = 225.68/x
  3. Step 3: Cross multiply
    738.68x = 1,108.08 × 225.68
  4. Step 4: Simplify right side
    738.68x = 250,071.49
  5. Step 5: Solve for x
    x = 250,071.49/738.68
  6. Step 6: Final answer
    x = 338.54

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1.5x scale

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.