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Finding the Fourth Proportional to 355.77, 492.86 and 347.26

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Solution

The fourth proportional to 355.77, 492.86 and 347.26 is: 481.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    355.77 : 492.86 = 347.26 : x
  2. Step 2: Convert to fraction form
    355.77/492.86 = 347.26/x
  3. Step 3: Cross multiply
    355.77x = 492.86 × 347.26
  4. Step 4: Simplify right side
    355.77x = 171,148.83
  5. Step 5: Solve for x
    x = 171,148.83/355.77
  6. Step 6: Final answer
    x = 481.07

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.