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Finding the Fourth Proportional to 603.63, 832.60 and 428.67

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Solution

The fourth proportional to 603.63, 832.60 and 428.67 is: 591.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    603.63 : 832.60 = 428.67 : x
  2. Step 2: Convert to fraction form
    603.63/832.60 = 428.67/x
  3. Step 3: Cross multiply
    603.63x = 832.60 × 428.67
  4. Step 4: Simplify right side
    603.63x = 356,910.64
  5. Step 5: Solve for x
    x = 356,910.64/603.63
  6. Step 6: Final answer
    x = 591.27

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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.