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Finding the Fourth Proportional to 461.10, 690.40 and 244.21

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Solution

The fourth proportional to 461.10, 690.40 and 244.21 is: 365.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    461.10 : 690.40 = 244.21 : x
  2. Step 2: Convert to fraction form
    461.10/690.40 = 244.21/x
  3. Step 3: Cross multiply
    461.10x = 690.40 × 244.21
  4. Step 4: Simplify right side
    461.10x = 168,602.58
  5. Step 5: Solve for x
    x = 168,602.58/461.10
  6. Step 6: Final answer
    x = 365.65

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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.