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Finding the Fourth Proportional to 669.47, 924.01 and 448.34

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Solution

The fourth proportional to 669.47, 924.01 and 448.34 is: 618.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    669.47 : 924.01 = 448.34 : x
  2. Step 2: Convert to fraction form
    669.47/924.01 = 448.34/x
  3. Step 3: Cross multiply
    669.47x = 924.01 × 448.34
  4. Step 4: Simplify right side
    669.47x = 414,264.90
  5. Step 5: Solve for x
    x = 414,264.90/669.47
  6. Step 6: Final answer
    x = 618.80

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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.