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Finding the Fourth Proportional to 890.01, 1,334.82 and 240.78

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Solution

The fourth proportional to 890.01, 1,334.82 and 240.78 is: 361.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    890.01 : 1,334.82 = 240.78 : x
  2. Step 2: Convert to fraction form
    890.01/1,334.82 = 240.78/x
  3. Step 3: Cross multiply
    890.01x = 1,334.82 × 240.78
  4. Step 4: Simplify right side
    890.01x = 321,397.96
  5. Step 5: Solve for x
    x = 321,397.96/890.01
  6. Step 6: Final answer
    x = 361.12

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.