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Finding the Fourth Proportional to 405.64, 609.04 and 337.60

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Solution

The fourth proportional to 405.64, 609.04 and 337.60 is: 506.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    405.64 : 609.04 = 337.60 : x
  2. Step 2: Convert to fraction form
    405.64/609.04 = 337.60/x
  3. Step 3: Cross multiply
    405.64x = 609.04 × 337.60
  4. Step 4: Simplify right side
    405.64x = 205,611.90
  5. Step 5: Solve for x
    x = 205,611.90/405.64
  6. Step 6: Final answer
    x = 506.88

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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.