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Finding the Fourth Proportional to 894.50, 1,341.83 and 278.21

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Solution

The fourth proportional to 894.50, 1,341.83 and 278.21 is: 417.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    894.50 : 1,341.83 = 278.21 : x
  2. Step 2: Convert to fraction form
    894.50/1,341.83 = 278.21/x
  3. Step 3: Cross multiply
    894.50x = 1,341.83 × 278.21
  4. Step 4: Simplify right side
    894.50x = 373,302.42
  5. Step 5: Solve for x
    x = 373,302.42/894.50
  6. Step 6: Final answer
    x = 417.33

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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.