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Finding the Fourth Proportional to 676.18, 1,017.97 and 461.13

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Solution

The fourth proportional to 676.18, 1,017.97 and 461.13 is: 694.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    676.18 : 1,017.97 = 461.13 : x
  2. Step 2: Convert to fraction form
    676.18/1,017.97 = 461.13/x
  3. Step 3: Cross multiply
    676.18x = 1,017.97 × 461.13
  4. Step 4: Simplify right side
    676.18x = 469,416.51
  5. Step 5: Solve for x
    x = 469,416.51/676.18
  6. Step 6: Final answer
    x = 694.22

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.