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Finding the Fourth Proportional to 894.38, 1,340.60 and 346.40

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Solution

The fourth proportional to 894.38, 1,340.60 and 346.40 is: 519.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    894.38 : 1,340.60 = 346.40 : x
  2. Step 2: Convert to fraction form
    894.38/1,340.60 = 346.40/x
  3. Step 3: Cross multiply
    894.38x = 1,340.60 × 346.40
  4. Step 4: Simplify right side
    894.38x = 464,383.84
  5. Step 5: Solve for x
    x = 464,383.84/894.38
  6. Step 6: Final answer
    x = 519.22

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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.