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Finding the Fourth Proportional to 591.58, 815.62 and 484.84

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Solution

The fourth proportional to 591.58, 815.62 and 484.84 is: 668.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    591.58 : 815.62 = 484.84 : x
  2. Step 2: Convert to fraction form
    591.58/815.62 = 484.84/x
  3. Step 3: Cross multiply
    591.58x = 815.62 × 484.84
  4. Step 4: Simplify right side
    591.58x = 395,443.69
  5. Step 5: Solve for x
    x = 395,443.69/591.58
  6. Step 6: Final answer
    x = 668.46

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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.