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Finding the Fourth Proportional to 692.40, 951.60 and 672.96

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Solution

The fourth proportional to 692.40, 951.60 and 672.96 is: 924.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    692.40 : 951.60 = 672.96 : x
  2. Step 2: Convert to fraction form
    692.40/951.60 = 672.96/x
  3. Step 3: Cross multiply
    692.40x = 951.60 × 672.96
  4. Step 4: Simplify right side
    692.40x = 640,388.74
  5. Step 5: Solve for x
    x = 640,388.74/692.40
  6. Step 6: Final answer
    x = 924.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.