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Finding the Fourth Proportional to 425.46, 587.34 and 325.05

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Solution

The fourth proportional to 425.46, 587.34 and 325.05 is: 448.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    425.46 : 587.34 = 325.05 : x
  2. Step 2: Convert to fraction form
    425.46/587.34 = 325.05/x
  3. Step 3: Cross multiply
    425.46x = 587.34 × 325.05
  4. Step 4: Simplify right side
    425.46x = 190,914.87
  5. Step 5: Solve for x
    x = 190,914.87/425.46
  6. Step 6: Final answer
    x = 448.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.