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Finding the Fourth Proportional to 435.85, 601.46 and 256.40

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Solution

The fourth proportional to 435.85, 601.46 and 256.40 is: 353.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    435.85 : 601.46 = 256.40 : x
  2. Step 2: Convert to fraction form
    435.85/601.46 = 256.40/x
  3. Step 3: Cross multiply
    435.85x = 601.46 × 256.40
  4. Step 4: Simplify right side
    435.85x = 154,213.59
  5. Step 5: Solve for x
    x = 154,213.59/435.85
  6. Step 6: Final answer
    x = 353.82

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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.