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Finding the Fourth Proportional to 486.45, 730.04 and 291.56

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Solution

The fourth proportional to 486.45, 730.04 and 291.56 is: 437.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    486.45 : 730.04 = 291.56 : x
  2. Step 2: Convert to fraction form
    486.45/730.04 = 291.56/x
  3. Step 3: Cross multiply
    486.45x = 730.04 × 291.56
  4. Step 4: Simplify right side
    486.45x = 212,845.35
  5. Step 5: Solve for x
    x = 212,845.35/486.45
  6. Step 6: Final answer
    x = 437.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.