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Finding the Fourth Proportional to 405.92, 608.49 and 306.95

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Solution

The fourth proportional to 405.92, 608.49 and 306.95 is: 460.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    405.92 : 608.49 = 306.95 : x
  2. Step 2: Convert to fraction form
    405.92/608.49 = 306.95/x
  3. Step 3: Cross multiply
    405.92x = 608.49 × 306.95
  4. Step 4: Simplify right side
    405.92x = 186,772.96
  5. Step 5: Solve for x
    x = 186,772.96/405.92
  6. Step 6: Final answer
    x = 460.13

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.