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Finding the Fourth Proportional to 890.85, 1,333.40 and 504.93

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Solution

The fourth proportional to 890.85, 1,333.40 and 504.93 is: 755.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    890.85 : 1,333.40 = 504.93 : x
  2. Step 2: Convert to fraction form
    890.85/1,333.40 = 504.93/x
  3. Step 3: Cross multiply
    890.85x = 1,333.40 × 504.93
  4. Step 4: Simplify right side
    890.85x = 673,271.14
  5. Step 5: Solve for x
    x = 673,271.14/890.85
  6. Step 6: Final answer
    x = 755.76

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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.