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Finding the Fourth Proportional to 648.35, 894.92 and 615.28

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Solution

The fourth proportional to 648.35, 894.92 and 615.28 is: 849.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    648.35 : 894.92 = 615.28 : x
  2. Step 2: Convert to fraction form
    648.35/894.92 = 615.28/x
  3. Step 3: Cross multiply
    648.35x = 894.92 × 615.28
  4. Step 4: Simplify right side
    648.35x = 550,626.38
  5. Step 5: Solve for x
    x = 550,626.38/648.35
  6. Step 6: Final answer
    x = 849.27

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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.