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Finding the Fourth Proportional to 556.92, 835.86 and 215.16

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Solution

The fourth proportional to 556.92, 835.86 and 215.16 is: 322.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    556.92 : 835.86 = 215.16 : x
  2. Step 2: Convert to fraction form
    556.92/835.86 = 215.16/x
  3. Step 3: Cross multiply
    556.92x = 835.86 × 215.16
  4. Step 4: Simplify right side
    556.92x = 179,843.64
  5. Step 5: Solve for x
    x = 179,843.64/556.92
  6. Step 6: Final answer
    x = 322.93

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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.