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Finding the Fourth Proportional to 603.11, 904.35 and 397.79

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Solution

The fourth proportional to 603.11, 904.35 and 397.79 is: 596.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    603.11 : 904.35 = 397.79 : x
  2. Step 2: Convert to fraction form
    603.11/904.35 = 397.79/x
  3. Step 3: Cross multiply
    603.11x = 904.35 × 397.79
  4. Step 4: Simplify right side
    603.11x = 359,741.39
  5. Step 5: Solve for x
    x = 359,741.39/603.11
  6. Step 6: Final answer
    x = 596.48

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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.