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Finding the Fourth Proportional to 432.89, 597.80 and 308.55

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Solution

The fourth proportional to 432.89, 597.80 and 308.55 is: 426.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    432.89 : 597.80 = 308.55 : x
  2. Step 2: Convert to fraction form
    432.89/597.80 = 308.55/x
  3. Step 3: Cross multiply
    432.89x = 597.80 × 308.55
  4. Step 4: Simplify right side
    432.89x = 184,451.96
  5. Step 5: Solve for x
    x = 184,451.96/432.89
  6. Step 6: Final answer
    x = 426.10

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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.