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Finding the Fourth Proportional to 903.63, 1,245.24 and 641.19

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Solution

The fourth proportional to 903.63, 1,245.24 and 641.19 is: 883.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    903.63 : 1,245.24 = 641.19 : x
  2. Step 2: Convert to fraction form
    903.63/1,245.24 = 641.19/x
  3. Step 3: Cross multiply
    903.63x = 1,245.24 × 641.19
  4. Step 4: Simplify right side
    903.63x = 798,435.44
  5. Step 5: Solve for x
    x = 798,435.44/903.63
  6. Step 6: Final answer
    x = 883.59

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.