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Finding the Fourth Proportional to 617.74, 926.49 and 284.11

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Solution

The fourth proportional to 617.74, 926.49 and 284.11 is: 426.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    617.74 : 926.49 = 284.11 : x
  2. Step 2: Convert to fraction form
    617.74/926.49 = 284.11/x
  3. Step 3: Cross multiply
    617.74x = 926.49 × 284.11
  4. Step 4: Simplify right side
    617.74x = 263,225.07
  5. Step 5: Solve for x
    x = 263,225.07/617.74
  6. Step 6: Final answer
    x = 426.11

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Double scale
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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.