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Finding the Fourth Proportional to 244.80, 368.84 and 212.40

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Solution

The fourth proportional to 244.80, 368.84 and 212.40 is: 320.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    244.80 : 368.84 = 212.40 : x
  2. Step 2: Convert to fraction form
    244.80/368.84 = 212.40/x
  3. Step 3: Cross multiply
    244.80x = 368.84 × 212.40
  4. Step 4: Simplify right side
    244.80x = 78,341.62
  5. Step 5: Solve for x
    x = 78,341.62/244.80
  6. Step 6: Final answer
    x = 320.02

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.