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Finding the Fourth Proportional to 1,488.89, 2,234.48 and 623.81

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Solution

The fourth proportional to 1,488.89, 2,234.48 and 623.81 is: 936.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,488.89 : 2,234.48 = 623.81 : x
  2. Step 2: Convert to fraction form
    1,488.89/2,234.48 = 623.81/x
  3. Step 3: Cross multiply
    1,488.89x = 2,234.48 × 623.81
  4. Step 4: Simplify right side
    1,488.89x = 1,393,887.85
  5. Step 5: Solve for x
    x = 1,393,887.85/1,488.89
  6. Step 6: Final answer
    x = 936.19

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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.