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Finding the Fourth Proportional to 1,240.81, 1,859.18 and 581.99

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Solution

The fourth proportional to 1,240.81, 1,859.18 and 581.99 is: 872.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,240.81 : 1,859.18 = 581.99 : x
  2. Step 2: Convert to fraction form
    1,240.81/1,859.18 = 581.99/x
  3. Step 3: Cross multiply
    1,240.81x = 1,859.18 × 581.99
  4. Step 4: Simplify right side
    1,240.81x = 1,082,011.96
  5. Step 5: Solve for x
    x = 1,082,011.96/1,240.81
  6. Step 6: Final answer
    x = 872.02

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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.