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Finding the Fourth Proportional to 355.34, 489.27 and 322.94

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Solution

The fourth proportional to 355.34, 489.27 and 322.94 is: 444.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    355.34 : 489.27 = 322.94 : x
  2. Step 2: Convert to fraction form
    355.34/489.27 = 322.94/x
  3. Step 3: Cross multiply
    355.34x = 489.27 × 322.94
  4. Step 4: Simplify right side
    355.34x = 158,004.85
  5. Step 5: Solve for x
    x = 158,004.85/355.34
  6. Step 6: Final answer
    x = 444.66

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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.