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Finding the Fourth Proportional to 432.33, 596.49 and 257.64

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Solution

The fourth proportional to 432.33, 596.49 and 257.64 is: 355.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    432.33 : 596.49 = 257.64 : x
  2. Step 2: Convert to fraction form
    432.33/596.49 = 257.64/x
  3. Step 3: Cross multiply
    432.33x = 596.49 × 257.64
  4. Step 4: Simplify right side
    432.33x = 153,679.68
  5. Step 5: Solve for x
    x = 153,679.68/432.33
  6. Step 6: Final answer
    x = 355.47

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.