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Finding the Fourth Proportional to 611.24, 844.20 and 488.24

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Solution

The fourth proportional to 611.24, 844.20 and 488.24 is: 674.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    611.24 : 844.20 = 488.24 : x
  2. Step 2: Convert to fraction form
    611.24/844.20 = 488.24/x
  3. Step 3: Cross multiply
    611.24x = 844.20 × 488.24
  4. Step 4: Simplify right side
    611.24x = 412,172.21
  5. Step 5: Solve for x
    x = 412,172.21/611.24
  6. Step 6: Final answer
    x = 674.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.