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Finding the Fourth Proportional to 432.51, 596.64 and 285.09

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Solution

The fourth proportional to 432.51, 596.64 and 285.09 is: 393.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    432.51 : 596.64 = 285.09 : x
  2. Step 2: Convert to fraction form
    432.51/596.64 = 285.09/x
  3. Step 3: Cross multiply
    432.51x = 596.64 × 285.09
  4. Step 4: Simplify right side
    432.51x = 170,096.10
  5. Step 5: Solve for x
    x = 170,096.10/432.51
  6. Step 6: Final answer
    x = 393.28

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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.