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Finding the Fourth Proportional to 662.79, 915.66 and 441.66

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Solution

The fourth proportional to 662.79, 915.66 and 441.66 is: 610.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    662.79 : 915.66 = 441.66 : x
  2. Step 2: Convert to fraction form
    662.79/915.66 = 441.66/x
  3. Step 3: Cross multiply
    662.79x = 915.66 × 441.66
  4. Step 4: Simplify right side
    662.79x = 404,410.40
  5. Step 5: Solve for x
    x = 404,410.40/662.79
  6. Step 6: Final answer
    x = 610.16

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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.