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Finding the Fourth Proportional to 484.38, 663.59 and 465.89

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Solution

The fourth proportional to 484.38, 663.59 and 465.89 is: 638.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    484.38 : 663.59 = 465.89 : x
  2. Step 2: Convert to fraction form
    484.38/663.59 = 465.89/x
  3. Step 3: Cross multiply
    484.38x = 663.59 × 465.89
  4. Step 4: Simplify right side
    484.38x = 309,157.79
  5. Step 5: Solve for x
    x = 309,157.79/484.38
  6. Step 6: Final answer
    x = 638.25

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.