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Finding the Fourth Proportional to 843.15, 1,264.65 and 295.35

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Solution

The fourth proportional to 843.15, 1,264.65 and 295.35 is: 443.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    843.15 : 1,264.65 = 295.35 : x
  2. Step 2: Convert to fraction form
    843.15/1,264.65 = 295.35/x
  3. Step 3: Cross multiply
    843.15x = 1,264.65 × 295.35
  4. Step 4: Simplify right side
    843.15x = 373,514.38
  5. Step 5: Solve for x
    x = 373,514.38/843.15
  6. Step 6: Final answer
    x = 443.00

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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.