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Finding the Fourth Proportional to 385.95, 578.94 and 180.69

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Solution

The fourth proportional to 385.95, 578.94 and 180.69 is: 271.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    385.95 : 578.94 = 180.69 : x
  2. Step 2: Convert to fraction form
    385.95/578.94 = 180.69/x
  3. Step 3: Cross multiply
    385.95x = 578.94 × 180.69
  4. Step 4: Simplify right side
    385.95x = 104,608.67
  5. Step 5: Solve for x
    x = 104,608.67/385.95
  6. Step 6: Final answer
    x = 271.04

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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.