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Finding the Fourth Proportional to 511.26, 706.23 and 486.96

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Solution

The fourth proportional to 511.26, 706.23 and 486.96 is: 672.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    511.26 : 706.23 = 486.96 : x
  2. Step 2: Convert to fraction form
    511.26/706.23 = 486.96/x
  3. Step 3: Cross multiply
    511.26x = 706.23 × 486.96
  4. Step 4: Simplify right side
    511.26x = 343,905.76
  5. Step 5: Solve for x
    x = 343,905.76/511.26
  6. Step 6: Final answer
    x = 672.66

Related Problems

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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.