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Finding the Fourth Proportional to 603.55, 832.03 and 428.59

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Solution

The fourth proportional to 603.55, 832.03 and 428.59 is: 590.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    603.55 : 832.03 = 428.59 : x
  2. Step 2: Convert to fraction form
    603.55/832.03 = 428.59/x
  3. Step 3: Cross multiply
    603.55x = 832.03 × 428.59
  4. Step 4: Simplify right side
    603.55x = 356,599.74
  5. Step 5: Solve for x
    x = 356,599.74/603.55
  6. Step 6: Final answer
    x = 590.84

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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.