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Finding the Fourth Proportional to 576.37, 858.97 and 557.92

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Solution

The fourth proportional to 576.37, 858.97 and 557.92 is: 831.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    576.37 : 858.97 = 557.92 : x
  2. Step 2: Convert to fraction form
    576.37/858.97 = 557.92/x
  3. Step 3: Cross multiply
    576.37x = 858.97 × 557.92
  4. Step 4: Simplify right side
    576.37x = 479,236.54
  5. Step 5: Solve for x
    x = 479,236.54/576.37
  6. Step 6: Final answer
    x = 831.47

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.