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Finding the Fourth Proportional to 432.27, 596.61 and 257.63

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Solution

The fourth proportional to 432.27, 596.61 and 257.63 is: 355.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    432.27 : 596.61 = 257.63 : x
  2. Step 2: Convert to fraction form
    432.27/596.61 = 257.63/x
  3. Step 3: Cross multiply
    432.27x = 596.61 × 257.63
  4. Step 4: Simplify right side
    432.27x = 153,701.65
  5. Step 5: Solve for x
    x = 153,701.65/432.27
  6. Step 6: Final answer
    x = 355.57

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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.