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Finding the Fourth Proportional to 403.07, 603.98 and 372.69

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Solution

The fourth proportional to 403.07, 603.98 and 372.69 is: 558.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    403.07 : 603.98 = 372.69 : x
  2. Step 2: Convert to fraction form
    403.07/603.98 = 372.69/x
  3. Step 3: Cross multiply
    403.07x = 603.98 × 372.69
  4. Step 4: Simplify right side
    403.07x = 225,095.44
  5. Step 5: Solve for x
    x = 225,095.44/403.07
  6. Step 6: Final answer
    x = 558.46

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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.