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Finding the Fourth Proportional to 432.81, 597.38 and 285.66

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Solution

The fourth proportional to 432.81, 597.38 and 285.66 is: 394.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    432.81 : 597.38 = 285.66 : x
  2. Step 2: Convert to fraction form
    432.81/597.38 = 285.66/x
  3. Step 3: Cross multiply
    432.81x = 597.38 × 285.66
  4. Step 4: Simplify right side
    432.81x = 170,646.14
  5. Step 5: Solve for x
    x = 170,646.14/432.81
  6. Step 6: Final answer
    x = 394.27

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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.