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Finding the Fourth Proportional to 233.18, 349.31 and 130.16

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Solution

The fourth proportional to 233.18, 349.31 and 130.16 is: 194.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    233.18 : 349.31 = 130.16 : x
  2. Step 2: Convert to fraction form
    233.18/349.31 = 130.16/x
  3. Step 3: Cross multiply
    233.18x = 349.31 × 130.16
  4. Step 4: Simplify right side
    233.18x = 45,465.42
  5. Step 5: Solve for x
    x = 45,465.42/233.18
  6. Step 6: Final answer
    x = 194.98

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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.