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Finding the Fourth Proportional to 662.85, 915.12 and 453.33

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Solution

The fourth proportional to 662.85, 915.12 and 453.33 is: 625.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    662.85 : 915.12 = 453.33 : x
  2. Step 2: Convert to fraction form
    662.85/915.12 = 453.33/x
  3. Step 3: Cross multiply
    662.85x = 915.12 × 453.33
  4. Step 4: Simplify right side
    662.85x = 414,851.35
  5. Step 5: Solve for x
    x = 414,851.35/662.85
  6. Step 6: Final answer
    x = 625.86

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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.