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Finding the Fourth Proportional to 405.44, 604.88 and 366.56

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Solution

The fourth proportional to 405.44, 604.88 and 366.56 is: 546.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    405.44 : 604.88 = 366.56 : x
  2. Step 2: Convert to fraction form
    405.44/604.88 = 366.56/x
  3. Step 3: Cross multiply
    405.44x = 604.88 × 366.56
  4. Step 4: Simplify right side
    405.44x = 221,724.81
  5. Step 5: Solve for x
    x = 221,724.81/405.44
  6. Step 6: Final answer
    x = 546.87

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.