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Finding the Fourth Proportional to 432.29, 596.16 and 282.78

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Solution

The fourth proportional to 432.29, 596.16 and 282.78 is: 389.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    432.29 : 596.16 = 282.78 : x
  2. Step 2: Convert to fraction form
    432.29/596.16 = 282.78/x
  3. Step 3: Cross multiply
    432.29x = 596.16 × 282.78
  4. Step 4: Simplify right side
    432.29x = 168,582.12
  5. Step 5: Solve for x
    x = 168,582.12/432.29
  6. Step 6: Final answer
    x = 389.98

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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.