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Finding the Fourth Proportional to 405.94, 608.47 and 267.07

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Solution

The fourth proportional to 405.94, 608.47 and 267.07 is: 400.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    405.94 : 608.47 = 267.07 : x
  2. Step 2: Convert to fraction form
    405.94/608.47 = 267.07/x
  3. Step 3: Cross multiply
    405.94x = 608.47 × 267.07
  4. Step 4: Simplify right side
    405.94x = 162,504.08
  5. Step 5: Solve for x
    x = 162,504.08/405.94
  6. Step 6: Final answer
    x = 400.32

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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.