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Finding the Fourth Proportional to 798.20, 1,197.30 and 250.38

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Solution

The fourth proportional to 798.20, 1,197.30 and 250.38 is: 375.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    798.20 : 1,197.30 = 250.38 : x
  2. Step 2: Convert to fraction form
    798.20/1,197.30 = 250.38/x
  3. Step 3: Cross multiply
    798.20x = 1,197.30 × 250.38
  4. Step 4: Simplify right side
    798.20x = 299,779.97
  5. Step 5: Solve for x
    x = 299,779.97/798.20
  6. Step 6: Final answer
    x = 375.57

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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.