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Finding the Fourth Proportional to 366.78, 549.34 and 320.60

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Solution

The fourth proportional to 366.78, 549.34 and 320.60 is: 480.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    366.78 : 549.34 = 320.60 : x
  2. Step 2: Convert to fraction form
    366.78/549.34 = 320.60/x
  3. Step 3: Cross multiply
    366.78x = 549.34 × 320.60
  4. Step 4: Simplify right side
    366.78x = 176,118.40
  5. Step 5: Solve for x
    x = 176,118.40/366.78
  6. Step 6: Final answer
    x = 480.17

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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.