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Finding the Fourth Proportional to 407.56, 608.69 and 334.60

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Solution

The fourth proportional to 407.56, 608.69 and 334.60 is: 499.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    407.56 : 608.69 = 334.60 : x
  2. Step 2: Convert to fraction form
    407.56/608.69 = 334.60/x
  3. Step 3: Cross multiply
    407.56x = 608.69 × 334.60
  4. Step 4: Simplify right side
    407.56x = 203,667.67
  5. Step 5: Solve for x
    x = 203,667.67/407.56
  6. Step 6: Final answer
    x = 499.72

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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.