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Finding the Fourth Proportional to 411.81, 618.03 and 152.06

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Solution

The fourth proportional to 411.81, 618.03 and 152.06 is: 228.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    411.81 : 618.03 = 152.06 : x
  2. Step 2: Convert to fraction form
    411.81/618.03 = 152.06/x
  3. Step 3: Cross multiply
    411.81x = 618.03 × 152.06
  4. Step 4: Simplify right side
    411.81x = 93,976.88
  5. Step 5: Solve for x
    x = 93,976.88/411.81
  6. Step 6: Final answer
    x = 228.20

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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.