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Finding the Fourth Proportional to 358.56, 537.60 and 242.64

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Solution

The fourth proportional to 358.56, 537.60 and 242.64 is: 363.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    358.56 : 537.60 = 242.64 : x
  2. Step 2: Convert to fraction form
    358.56/537.60 = 242.64/x
  3. Step 3: Cross multiply
    358.56x = 537.60 × 242.64
  4. Step 4: Simplify right side
    358.56x = 130,443.26
  5. Step 5: Solve for x
    x = 130,443.26/358.56
  6. Step 6: Final answer
    x = 363.80

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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.