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Finding the Fourth Proportional to 582.72, 873.44 and 257.84

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Solution

The fourth proportional to 582.72, 873.44 and 257.84 is: 386.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    582.72 : 873.44 = 257.84 : x
  2. Step 2: Convert to fraction form
    582.72/873.44 = 257.84/x
  3. Step 3: Cross multiply
    582.72x = 873.44 × 257.84
  4. Step 4: Simplify right side
    582.72x = 225,207.77
  5. Step 5: Solve for x
    x = 225,207.77/582.72
  6. Step 6: Final answer
    x = 386.48

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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.