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Finding the Fourth Proportional to 273.61, 411.18 and 255.16

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Solution

The fourth proportional to 273.61, 411.18 and 255.16 is: 383.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    273.61 : 411.18 = 255.16 : x
  2. Step 2: Convert to fraction form
    273.61/411.18 = 255.16/x
  3. Step 3: Cross multiply
    273.61x = 411.18 × 255.16
  4. Step 4: Simplify right side
    273.61x = 104,916.69
  5. Step 5: Solve for x
    x = 104,916.69/273.61
  6. Step 6: Final answer
    x = 383.45

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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.