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Finding the Fourth Proportional to 484.55, 668.73 and 288.08

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Solution

The fourth proportional to 484.55, 668.73 and 288.08 is: 397.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    484.55 : 668.73 = 288.08 : x
  2. Step 2: Convert to fraction form
    484.55/668.73 = 288.08/x
  3. Step 3: Cross multiply
    484.55x = 668.73 × 288.08
  4. Step 4: Simplify right side
    484.55x = 192,647.74
  5. Step 5: Solve for x
    x = 192,647.74/484.55
  6. Step 6: Final answer
    x = 397.58

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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.