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Finding the Fourth Proportional to 573.21, 792.15 and 474.81

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Solution

The fourth proportional to 573.21, 792.15 and 474.81 is: 656.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    573.21 : 792.15 = 474.81 : x
  2. Step 2: Convert to fraction form
    573.21/792.15 = 474.81/x
  3. Step 3: Cross multiply
    573.21x = 792.15 × 474.81
  4. Step 4: Simplify right side
    573.21x = 376,120.74
  5. Step 5: Solve for x
    x = 376,120.74/573.21
  6. Step 6: Final answer
    x = 656.17

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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.