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Finding the Fourth Proportional to 1,416.89, 2,125.44 and 442.97

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Solution

The fourth proportional to 1,416.89, 2,125.44 and 442.97 is: 664.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,416.89 : 2,125.44 = 442.97 : x
  2. Step 2: Convert to fraction form
    1,416.89/2,125.44 = 442.97/x
  3. Step 3: Cross multiply
    1,416.89x = 2,125.44 × 442.97
  4. Step 4: Simplify right side
    1,416.89x = 941,503.50
  5. Step 5: Solve for x
    x = 941,503.50/1,416.89
  6. Step 6: Final answer
    x = 664.48

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1.5x scale

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.