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Finding the Fourth Proportional to 669.76, 925.02 and 448.33

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Solution

The fourth proportional to 669.76, 925.02 and 448.33 is: 619.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    669.76 : 925.02 = 448.33 : x
  2. Step 2: Convert to fraction form
    669.76/925.02 = 448.33/x
  3. Step 3: Cross multiply
    669.76x = 925.02 × 448.33
  4. Step 4: Simplify right side
    669.76x = 414,714.22
  5. Step 5: Solve for x
    x = 414,714.22/669.76
  6. Step 6: Final answer
    x = 619.20

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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.