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Finding the Fourth Proportional to 749.39, 1,124.12 and 201.58

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Solution

The fourth proportional to 749.39, 1,124.12 and 201.58 is: 302.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    749.39 : 1,124.12 = 201.58 : x
  2. Step 2: Convert to fraction form
    749.39/1,124.12 = 201.58/x
  3. Step 3: Cross multiply
    749.39x = 1,124.12 × 201.58
  4. Step 4: Simplify right side
    749.39x = 226,597.80
  5. Step 5: Solve for x
    x = 226,597.80/749.39
  6. Step 6: Final answer
    x = 302.38

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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.