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Finding the Fourth Proportional to 894.43, 1,234.40 and 501.45

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Solution

The fourth proportional to 894.43, 1,234.40 and 501.45 is: 692.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    894.43 : 1,234.40 = 501.45 : x
  2. Step 2: Convert to fraction form
    894.43/1,234.40 = 501.45/x
  3. Step 3: Cross multiply
    894.43x = 1,234.40 × 501.45
  4. Step 4: Simplify right side
    894.43x = 618,987.63
  5. Step 5: Solve for x
    x = 618,987.63/894.43
  6. Step 6: Final answer
    x = 692.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.