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Finding the Fourth Proportional to 294.63, 406.50 and 210.63

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Solution

The fourth proportional to 294.63, 406.50 and 210.63 is: 290.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    294.63 : 406.50 = 210.63 : x
  2. Step 2: Convert to fraction form
    294.63/406.50 = 210.63/x
  3. Step 3: Cross multiply
    294.63x = 406.50 × 210.63
  4. Step 4: Simplify right side
    294.63x = 85,618.95
  5. Step 5: Solve for x
    x = 85,618.95/294.63
  6. Step 6: Final answer
    x = 290.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.