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Finding the Fourth Proportional to 256.40, 353.84 and 150.02

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Solution

The fourth proportional to 256.40, 353.84 and 150.02 is: 207.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    256.40 : 353.84 = 150.02 : x
  2. Step 2: Convert to fraction form
    256.40/353.84 = 150.02/x
  3. Step 3: Cross multiply
    256.40x = 353.84 × 150.02
  4. Step 4: Simplify right side
    256.40x = 53,080.56
  5. Step 5: Solve for x
    x = 53,080.56/256.40
  6. Step 6: Final answer
    x = 207.03

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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.