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Finding the Fourth Proportional to 432.75, 597.24 and 285.42

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Solution

The fourth proportional to 432.75, 597.24 and 285.42 is: 393.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    432.75 : 597.24 = 285.42 : x
  2. Step 2: Convert to fraction form
    432.75/597.24 = 285.42/x
  3. Step 3: Cross multiply
    432.75x = 597.24 × 285.42
  4. Step 4: Simplify right side
    432.75x = 170,464.24
  5. Step 5: Solve for x
    x = 170,464.24/432.75
  6. Step 6: Final answer
    x = 393.91

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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.