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Finding the Fourth Proportional to 1,489.01, 2,054.84 and 899.55

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Solution

The fourth proportional to 1,489.01, 2,054.84 and 899.55 is: 1,241.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,489.01 : 2,054.84 = 899.55 : x
  2. Step 2: Convert to fraction form
    1,489.01/2,054.84 = 899.55/x
  3. Step 3: Cross multiply
    1,489.01x = 2,054.84 × 899.55
  4. Step 4: Simplify right side
    1,489.01x = 1,848,426.82
  5. Step 5: Solve for x
    x = 1,848,426.82/1,489.01
  6. Step 6: Final answer
    x = 1,241.38

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1.5x scale

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.