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Finding the Fourth Proportional to 743.09, 1,025.39 and 546.26

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Solution

The fourth proportional to 743.09, 1,025.39 and 546.26 is: 753.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    743.09 : 1,025.39 = 546.26 : x
  2. Step 2: Convert to fraction form
    743.09/1,025.39 = 546.26/x
  3. Step 3: Cross multiply
    743.09x = 1,025.39 × 546.26
  4. Step 4: Simplify right side
    743.09x = 560,125.78
  5. Step 5: Solve for x
    x = 560,125.78/743.09
  6. Step 6: Final answer
    x = 753.78

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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.