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Finding the Fourth Proportional to 355.54, 493.57 and 345.52

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Solution

The fourth proportional to 355.54, 493.57 and 345.52 is: 479.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    355.54 : 493.57 = 345.52 : x
  2. Step 2: Convert to fraction form
    355.54/493.57 = 345.52/x
  3. Step 3: Cross multiply
    355.54x = 493.57 × 345.52
  4. Step 4: Simplify right side
    355.54x = 170,538.31
  5. Step 5: Solve for x
    x = 170,538.31/355.54
  6. Step 6: Final answer
    x = 479.66

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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.