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Finding the Fourth Proportional to 1,037.88, 1,555.88 and 805.50

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Solution

The fourth proportional to 1,037.88, 1,555.88 and 805.50 is: 1,207.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,037.88 : 1,555.88 = 805.50 : x
  2. Step 2: Convert to fraction form
    1,037.88/1,555.88 = 805.50/x
  3. Step 3: Cross multiply
    1,037.88x = 1,555.88 × 805.50
  4. Step 4: Simplify right side
    1,037.88x = 1,253,257.31
  5. Step 5: Solve for x
    x = 1,253,257.31/1,037.88
  6. Step 6: Final answer
    x = 1,207.52

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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.