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Finding the Fourth Proportional to 552.36, 824.60 and 479.48

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Solution

The fourth proportional to 552.36, 824.60 and 479.48 is: 715.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    552.36 : 824.60 = 479.48 : x
  2. Step 2: Convert to fraction form
    552.36/824.60 = 479.48/x
  3. Step 3: Cross multiply
    552.36x = 824.60 × 479.48
  4. Step 4: Simplify right side
    552.36x = 395,379.21
  5. Step 5: Solve for x
    x = 395,379.21/552.36
  6. Step 6: Final answer
    x = 715.80

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.