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Finding the Fourth Proportional to 1,239.48, 1,859.16 and 589.56

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Solution

The fourth proportional to 1,239.48, 1,859.16 and 589.56 is: 884.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,239.48 : 1,859.16 = 589.56 : x
  2. Step 2: Convert to fraction form
    1,239.48/1,859.16 = 589.56/x
  3. Step 3: Cross multiply
    1,239.48x = 1,859.16 × 589.56
  4. Step 4: Simplify right side
    1,239.48x = 1,096,086.37
  5. Step 5: Solve for x
    x = 1,096,086.37/1,239.48
  6. Step 6: Final answer
    x = 884.31

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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.