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Finding the Fourth Proportional to 511.67, 706.08 and 301.81

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Solution

The fourth proportional to 511.67, 706.08 and 301.81 is: 416.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    511.67 : 706.08 = 301.81 : x
  2. Step 2: Convert to fraction form
    511.67/706.08 = 301.81/x
  3. Step 3: Cross multiply
    511.67x = 706.08 × 301.81
  4. Step 4: Simplify right side
    511.67x = 213,102.00
  5. Step 5: Solve for x
    x = 213,102.00/511.67
  6. Step 6: Final answer
    x = 416.48

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.