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Finding the Fourth Proportional to 890.56, 1,229.52 and 704.80

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Solution

The fourth proportional to 890.56, 1,229.52 and 704.80 is: 973.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    890.56 : 1,229.52 = 704.80 : x
  2. Step 2: Convert to fraction form
    890.56/1,229.52 = 704.80/x
  3. Step 3: Cross multiply
    890.56x = 1,229.52 × 704.80
  4. Step 4: Simplify right side
    890.56x = 866,565.70
  5. Step 5: Solve for x
    x = 866,565.70/890.56
  6. Step 6: Final answer
    x = 973.06

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