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Finding the Fourth Proportional to 664.04, 915.54 and 453.80

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Solution

The fourth proportional to 664.04, 915.54 and 453.80 is: 625.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    664.04 : 915.54 = 453.80 : x
  2. Step 2: Convert to fraction form
    664.04/915.54 = 453.80/x
  3. Step 3: Cross multiply
    664.04x = 915.54 × 453.80
  4. Step 4: Simplify right side
    664.04x = 415,472.05
  5. Step 5: Solve for x
    x = 415,472.05/664.04
  6. Step 6: Final answer
    x = 625.67

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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.