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Finding the Fourth Proportional to 340.26, 469.17 and 290.94

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Solution

The fourth proportional to 340.26, 469.17 and 290.94 is: 401.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    340.26 : 469.17 = 290.94 : x
  2. Step 2: Convert to fraction form
    340.26/469.17 = 290.94/x
  3. Step 3: Cross multiply
    340.26x = 469.17 × 290.94
  4. Step 4: Simplify right side
    340.26x = 136,500.32
  5. Step 5: Solve for x
    x = 136,500.32/340.26
  6. Step 6: Final answer
    x = 401.16

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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.