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Finding the Fourth Proportional to 692.47, 955.36 and 482.28

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Solution

The fourth proportional to 692.47, 955.36 and 482.28 is: 665.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    692.47 : 955.36 = 482.28 : x
  2. Step 2: Convert to fraction form
    692.47/955.36 = 482.28/x
  3. Step 3: Cross multiply
    692.47x = 955.36 × 482.28
  4. Step 4: Simplify right side
    692.47x = 460,751.02
  5. Step 5: Solve for x
    x = 460,751.02/692.47
  6. Step 6: Final answer
    x = 665.37

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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.