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Finding the Fourth Proportional to 405.54, 607.60 and 300.95

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Solution

The fourth proportional to 405.54, 607.60 and 300.95 is: 450.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    405.54 : 607.60 = 300.95 : x
  2. Step 2: Convert to fraction form
    405.54/607.60 = 300.95/x
  3. Step 3: Cross multiply
    405.54x = 607.60 × 300.95
  4. Step 4: Simplify right side
    405.54x = 182,856.84
  5. Step 5: Solve for x
    x = 182,856.84/405.54
  6. Step 6: Final answer
    x = 450.90

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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.