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Finding the Fourth Proportional to 922.77, 1,273.19 and 612.27

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Solution

The fourth proportional to 922.77, 1,273.19 and 612.27 is: 844.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    922.77 : 1,273.19 = 612.27 : x
  2. Step 2: Convert to fraction form
    922.77/1,273.19 = 612.27/x
  3. Step 3: Cross multiply
    922.77x = 1,273.19 × 612.27
  4. Step 4: Simplify right side
    922.77x = 779,532.98
  5. Step 5: Solve for x
    x = 779,532.98/922.77
  6. Step 6: Final answer
    x = 844.77

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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.