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Finding the Fourth Proportional to 910.50, 1,363.63 and 544.48

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Solution

The fourth proportional to 910.50, 1,363.63 and 544.48 is: 815.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    910.50 : 1,363.63 = 544.48 : x
  2. Step 2: Convert to fraction form
    910.50/1,363.63 = 544.48/x
  3. Step 3: Cross multiply
    910.50x = 1,363.63 × 544.48
  4. Step 4: Simplify right side
    910.50x = 742,469.26
  5. Step 5: Solve for x
    x = 742,469.26/910.50
  6. Step 6: Final answer
    x = 815.45

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Double scale
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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.