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Finding the Fourth Proportional to 366.61, 549.55 and 147.16

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Solution

The fourth proportional to 366.61, 549.55 and 147.16 is: 220.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    366.61 : 549.55 = 147.16 : x
  2. Step 2: Convert to fraction form
    366.61/549.55 = 147.16/x
  3. Step 3: Cross multiply
    366.61x = 549.55 × 147.16
  4. Step 4: Simplify right side
    366.61x = 80,871.78
  5. Step 5: Solve for x
    x = 80,871.78/366.61
  6. Step 6: Final answer
    x = 220.59

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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.