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Finding the Fourth Proportional to 233.40, 350.16 and 130.74

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Solution

The fourth proportional to 233.40, 350.16 and 130.74 is: 196.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    233.40 : 350.16 = 130.74 : x
  2. Step 2: Convert to fraction form
    233.40/350.16 = 130.74/x
  3. Step 3: Cross multiply
    233.40x = 350.16 × 130.74
  4. Step 4: Simplify right side
    233.40x = 45,779.92
  5. Step 5: Solve for x
    x = 45,779.92/233.40
  6. Step 6: Final answer
    x = 196.14

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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.