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Finding the Fourth Proportional to 692.58, 954.54 and 612.12

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Solution

The fourth proportional to 692.58, 954.54 and 612.12 is: 843.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    692.58 : 954.54 = 612.12 : x
  2. Step 2: Convert to fraction form
    692.58/954.54 = 612.12/x
  3. Step 3: Cross multiply
    692.58x = 954.54 × 612.12
  4. Step 4: Simplify right side
    692.58x = 584,293.02
  5. Step 5: Solve for x
    x = 584,293.02/692.58
  6. Step 6: Final answer
    x = 843.65

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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.