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Finding the Fourth Proportional to 669.06, 923.68 and 448.74

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Solution

The fourth proportional to 669.06, 923.68 and 448.74 is: 619.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    669.06 : 923.68 = 448.74 : x
  2. Step 2: Convert to fraction form
    669.06/923.68 = 448.74/x
  3. Step 3: Cross multiply
    669.06x = 923.68 × 448.74
  4. Step 4: Simplify right side
    669.06x = 414,492.16
  5. Step 5: Solve for x
    x = 414,492.16/669.06
  6. Step 6: Final answer
    x = 619.51

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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.