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Finding the Fourth Proportional to 388.82, 579.95 and 366.26

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Solution

The fourth proportional to 388.82, 579.95 and 366.26 is: 546.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    388.82 : 579.95 = 366.26 : x
  2. Step 2: Convert to fraction form
    388.82/579.95 = 366.26/x
  3. Step 3: Cross multiply
    388.82x = 579.95 × 366.26
  4. Step 4: Simplify right side
    388.82x = 212,410.66
  5. Step 5: Solve for x
    x = 212,410.66/388.82
  6. Step 6: Final answer
    x = 546.30

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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.