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Finding the Fourth Proportional to 355.41, 492.60 and 348.93

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Solution

The fourth proportional to 355.41, 492.60 and 348.93 is: 483.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    355.41 : 492.60 = 348.93 : x
  2. Step 2: Convert to fraction form
    355.41/492.60 = 348.93/x
  3. Step 3: Cross multiply
    355.41x = 492.60 × 348.93
  4. Step 4: Simplify right side
    355.41x = 171,882.92
  5. Step 5: Solve for x
    x = 171,882.92/355.41
  6. Step 6: Final answer
    x = 483.62

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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.