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Finding the Fourth Proportional to 235.57, 353.58 and 120.10

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Solution

The fourth proportional to 235.57, 353.58 and 120.10 is: 180.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    235.57 : 353.58 = 120.10 : x
  2. Step 2: Convert to fraction form
    235.57/353.58 = 120.10/x
  3. Step 3: Cross multiply
    235.57x = 353.58 × 120.10
  4. Step 4: Simplify right side
    235.57x = 42,462.59
  5. Step 5: Solve for x
    x = 42,462.59/235.57
  6. Step 6: Final answer
    x = 180.25

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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.