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Finding the Fourth Proportional to 484.93, 669.14 and 275.12

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Solution

The fourth proportional to 484.93, 669.14 and 275.12 is: 379.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    484.93 : 669.14 = 275.12 : x
  2. Step 2: Convert to fraction form
    484.93/669.14 = 275.12/x
  3. Step 3: Cross multiply
    484.93x = 669.14 × 275.12
  4. Step 4: Simplify right side
    484.93x = 184,090.11
  5. Step 5: Solve for x
    x = 184,090.11/484.93
  6. Step 6: Final answer
    x = 379.62

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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.