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Finding the Fourth Proportional to 949.24, 1,422.88 and 400.98

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Solution

The fourth proportional to 949.24, 1,422.88 and 400.98 is: 601.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    949.24 : 1,422.88 = 400.98 : x
  2. Step 2: Convert to fraction form
    949.24/1,422.88 = 400.98/x
  3. Step 3: Cross multiply
    949.24x = 1,422.88 × 400.98
  4. Step 4: Simplify right side
    949.24x = 570,546.42
  5. Step 5: Solve for x
    x = 570,546.42/949.24
  6. Step 6: Final answer
    x = 601.06

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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.