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Finding the Fourth Proportional to 366.51, 549.47 and 212.25

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Solution

The fourth proportional to 366.51, 549.47 and 212.25 is: 318.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    366.51 : 549.47 = 212.25 : x
  2. Step 2: Convert to fraction form
    366.51/549.47 = 212.25/x
  3. Step 3: Cross multiply
    366.51x = 549.47 × 212.25
  4. Step 4: Simplify right side
    366.51x = 116,626.40
  5. Step 5: Solve for x
    x = 116,626.40/366.51
  6. Step 6: Final answer
    x = 318.21

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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.