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Finding the Fourth Proportional to 617.94, 926.64 and 271.80

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Solution

The fourth proportional to 617.94, 926.64 and 271.80 is: 407.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    617.94 : 926.64 = 271.80 : x
  2. Step 2: Convert to fraction form
    617.94/926.64 = 271.80/x
  3. Step 3: Cross multiply
    617.94x = 926.64 × 271.80
  4. Step 4: Simplify right side
    617.94x = 251,860.75
  5. Step 5: Solve for x
    x = 251,860.75/617.94
  6. Step 6: Final answer
    x = 407.58

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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.