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Finding the Fourth Proportional to 244.80, 366.80 and 210.40

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Solution

The fourth proportional to 244.80, 366.80 and 210.40 is: 315.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    244.80 : 366.80 = 210.40 : x
  2. Step 2: Convert to fraction form
    244.80/366.80 = 210.40/x
  3. Step 3: Cross multiply
    244.80x = 366.80 × 210.40
  4. Step 4: Simplify right side
    244.80x = 77,174.72
  5. Step 5: Solve for x
    x = 77,174.72/244.80
  6. Step 6: Final answer
    x = 315.26

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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.