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Finding the Fourth Proportional to 371.04, 556.05 and 289.50

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Solution

The fourth proportional to 371.04, 556.05 and 289.50 is: 433.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    371.04 : 556.05 = 289.50 : x
  2. Step 2: Convert to fraction form
    371.04/556.05 = 289.50/x
  3. Step 3: Cross multiply
    371.04x = 556.05 × 289.50
  4. Step 4: Simplify right side
    371.04x = 160,976.48
  5. Step 5: Solve for x
    x = 160,976.48/371.04
  6. Step 6: Final answer
    x = 433.85

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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.