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Finding the Fourth Proportional to 617.42, 926.46 and 328.84

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Solution

The fourth proportional to 617.42, 926.46 and 328.84 is: 493.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    617.42 : 926.46 = 328.84 : x
  2. Step 2: Convert to fraction form
    617.42/926.46 = 328.84/x
  3. Step 3: Cross multiply
    617.42x = 926.46 × 328.84
  4. Step 4: Simplify right side
    617.42x = 304,657.11
  5. Step 5: Solve for x
    x = 304,657.11/617.42
  6. Step 6: Final answer
    x = 493.44

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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.