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Finding the Fourth Proportional to 603.81, 903.74 and 372.89

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Solution

The fourth proportional to 603.81, 903.74 and 372.89 is: 558.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    603.81 : 903.74 = 372.89 : x
  2. Step 2: Convert to fraction form
    603.81/903.74 = 372.89/x
  3. Step 3: Cross multiply
    603.81x = 903.74 × 372.89
  4. Step 4: Simplify right side
    603.81x = 336,993.02
  5. Step 5: Solve for x
    x = 336,993.02/603.81
  6. Step 6: Final answer
    x = 558.11

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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.