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Finding the Fourth Proportional to 1,037.91, 1,556.96 and 379.95

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Solution

The fourth proportional to 1,037.91, 1,556.96 and 379.95 is: 569.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,037.91 : 1,556.96 = 379.95 : x
  2. Step 2: Convert to fraction form
    1,037.91/1,556.96 = 379.95/x
  3. Step 3: Cross multiply
    1,037.91x = 1,556.96 × 379.95
  4. Step 4: Simplify right side
    1,037.91x = 591,565.05
  5. Step 5: Solve for x
    x = 591,565.05/1,037.91
  6. Step 6: Final answer
    x = 569.96

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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.