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Finding the Fourth Proportional to 617.44, 926.80 and 400.48

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Solution

The fourth proportional to 617.44, 926.80 and 400.48 is: 601.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    617.44 : 926.80 = 400.48 : x
  2. Step 2: Convert to fraction form
    617.44/926.80 = 400.48/x
  3. Step 3: Cross multiply
    617.44x = 926.80 × 400.48
  4. Step 4: Simplify right side
    617.44x = 371,164.86
  5. Step 5: Solve for x
    x = 371,164.86/617.44
  6. Step 6: Final answer
    x = 601.14

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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.