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Finding the Fourth Proportional to 351.25, 484.77 and 340.49

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Solution

The fourth proportional to 351.25, 484.77 and 340.49 is: 469.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    351.25 : 484.77 = 340.49 : x
  2. Step 2: Convert to fraction form
    351.25/484.77 = 340.49/x
  3. Step 3: Cross multiply
    351.25x = 484.77 × 340.49
  4. Step 4: Simplify right side
    351.25x = 165,061.83
  5. Step 5: Solve for x
    x = 165,061.83/351.25
  6. Step 6: Final answer
    x = 469.93

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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.