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Finding the Fourth Proportional to 1,079.32, 1,618.84 and 897.88

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Solution

The fourth proportional to 1,079.32, 1,618.84 and 897.88 is: 1,346.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,079.32 : 1,618.84 = 897.88 : x
  2. Step 2: Convert to fraction form
    1,079.32/1,618.84 = 897.88/x
  3. Step 3: Cross multiply
    1,079.32x = 1,618.84 × 897.88
  4. Step 4: Simplify right side
    1,079.32x = 1,453,524.06
  5. Step 5: Solve for x
    x = 1,453,524.06/1,079.32
  6. Step 6: Final answer
    x = 1,346.70

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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.