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Finding the Fourth Proportional to 922.87, 1,273.52 and 503.21

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Solution

The fourth proportional to 922.87, 1,273.52 and 503.21 is: 694.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    922.87 : 1,273.52 = 503.21 : x
  2. Step 2: Convert to fraction form
    922.87/1,273.52 = 503.21/x
  3. Step 3: Cross multiply
    922.87x = 1,273.52 × 503.21
  4. Step 4: Simplify right side
    922.87x = 640,852.44
  5. Step 5: Solve for x
    x = 640,852.44/922.87
  6. Step 6: Final answer
    x = 694.42

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Double scale
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1.5x scale

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.