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Finding the Fourth Proportional to 388.53, 579.63 and 377.94

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Solution

The fourth proportional to 388.53, 579.63 and 377.94 is: 563.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    388.53 : 579.63 = 377.94 : x
  2. Step 2: Convert to fraction form
    388.53/579.63 = 377.94/x
  3. Step 3: Cross multiply
    388.53x = 579.63 × 377.94
  4. Step 4: Simplify right side
    388.53x = 219,066.26
  5. Step 5: Solve for x
    x = 219,066.26/388.53
  6. Step 6: Final answer
    x = 563.83

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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.