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Finding the Fourth Proportional to 894.09, 1,340.88 and 346.15

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Solution

The fourth proportional to 894.09, 1,340.88 and 346.15 is: 519.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    894.09 : 1,340.88 = 346.15 : x
  2. Step 2: Convert to fraction form
    894.09/1,340.88 = 346.15/x
  3. Step 3: Cross multiply
    894.09x = 1,340.88 × 346.15
  4. Step 4: Simplify right side
    894.09x = 464,137.18
  5. Step 5: Solve for x
    x = 464,137.18/894.09
  6. Step 6: Final answer
    x = 519.12

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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.