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Finding the Fourth Proportional to 1,410.22, 2,115.77 and 630.88

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Solution

The fourth proportional to 1,410.22, 2,115.77 and 630.88 is: 946.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,410.22 : 2,115.77 = 630.88 : x
  2. Step 2: Convert to fraction form
    1,410.22/2,115.77 = 630.88/x
  3. Step 3: Cross multiply
    1,410.22x = 2,115.77 × 630.88
  4. Step 4: Simplify right side
    1,410.22x = 1,334,794.61
  5. Step 5: Solve for x
    x = 1,334,794.61/1,410.22
  6. Step 6: Final answer
    x = 946.51

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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.