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Finding the Fourth Proportional to 692.34, 954.79 and 515.73

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Solution

The fourth proportional to 692.34, 954.79 and 515.73 is: 711.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    692.34 : 954.79 = 515.73 : x
  2. Step 2: Convert to fraction form
    692.34/954.79 = 515.73/x
  3. Step 3: Cross multiply
    692.34x = 954.79 × 515.73
  4. Step 4: Simplify right side
    692.34x = 492,416.14
  5. Step 5: Solve for x
    x = 492,416.14/692.34
  6. Step 6: Final answer
    x = 711.23

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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.