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Finding the Fourth Proportional to 366.95, 549.82 and 258.55

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Solution

The fourth proportional to 366.95, 549.82 and 258.55 is: 387.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    366.95 : 549.82 = 258.55 : x
  2. Step 2: Convert to fraction form
    366.95/549.82 = 258.55/x
  3. Step 3: Cross multiply
    366.95x = 549.82 × 258.55
  4. Step 4: Simplify right side
    366.95x = 142,155.96
  5. Step 5: Solve for x
    x = 142,155.96/366.95
  6. Step 6: Final answer
    x = 387.40

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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.