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Finding the Fourth Proportional to 576.06, 864.51 and 393.63

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Solution

The fourth proportional to 576.06, 864.51 and 393.63 is: 590.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    576.06 : 864.51 = 393.63 : x
  2. Step 2: Convert to fraction form
    576.06/864.51 = 393.63/x
  3. Step 3: Cross multiply
    576.06x = 864.51 × 393.63
  4. Step 4: Simplify right side
    576.06x = 340,297.07
  5. Step 5: Solve for x
    x = 340,297.07/576.06
  6. Step 6: Final answer
    x = 590.73

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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.