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Finding the Fourth Proportional to 597.60, 896.40 and 423.90

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Solution

The fourth proportional to 597.60, 896.40 and 423.90 is: 635.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    597.60 : 896.40 = 423.90 : x
  2. Step 2: Convert to fraction form
    597.60/896.40 = 423.90/x
  3. Step 3: Cross multiply
    597.60x = 896.40 × 423.90
  4. Step 4: Simplify right side
    597.60x = 379,983.96
  5. Step 5: Solve for x
    x = 379,983.96/597.60
  6. Step 6: Final answer
    x = 635.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.