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Finding the Fourth Proportional to 1,355.75, 2,031.99 and 584.63

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Solution

The fourth proportional to 1,355.75, 2,031.99 and 584.63 is: 876.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,355.75 : 2,031.99 = 584.63 : x
  2. Step 2: Convert to fraction form
    1,355.75/2,031.99 = 584.63/x
  3. Step 3: Cross multiply
    1,355.75x = 2,031.99 × 584.63
  4. Step 4: Simplify right side
    1,355.75x = 1,187,952.15
  5. Step 5: Solve for x
    x = 1,187,952.15/1,355.75
  6. Step 6: Final answer
    x = 876.24

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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.