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Finding the Fourth Proportional to 846.54, 1,270.19 and 299.12

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Solution

The fourth proportional to 846.54, 1,270.19 and 299.12 is: 448.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    846.54 : 1,270.19 = 299.12 : x
  2. Step 2: Convert to fraction form
    846.54/1,270.19 = 299.12/x
  3. Step 3: Cross multiply
    846.54x = 1,270.19 × 299.12
  4. Step 4: Simplify right side
    846.54x = 379,939.23
  5. Step 5: Solve for x
    x = 379,939.23/846.54
  6. Step 6: Final answer
    x = 448.81

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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.