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Finding the Fourth Proportional to 832.23, 1,248.36 and 215.91

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Solution

The fourth proportional to 832.23, 1,248.36 and 215.91 is: 323.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    832.23 : 1,248.36 = 215.91 : x
  2. Step 2: Convert to fraction form
    832.23/1,248.36 = 215.91/x
  3. Step 3: Cross multiply
    832.23x = 1,248.36 × 215.91
  4. Step 4: Simplify right side
    832.23x = 269,533.41
  5. Step 5: Solve for x
    x = 269,533.41/832.23
  6. Step 6: Final answer
    x = 323.87

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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.