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Finding the Fourth Proportional to 1,009.44, 1,393.50 and 677.73

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Solution

The fourth proportional to 1,009.44, 1,393.50 and 677.73 is: 935.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,009.44 : 1,393.50 = 677.73 : x
  2. Step 2: Convert to fraction form
    1,009.44/1,393.50 = 677.73/x
  3. Step 3: Cross multiply
    1,009.44x = 1,393.50 × 677.73
  4. Step 4: Simplify right side
    1,009.44x = 944,416.76
  5. Step 5: Solve for x
    x = 944,416.76/1,009.44
  6. Step 6: Final answer
    x = 935.58

Related Problems

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Half scale
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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.