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Finding the Fourth Proportional to 231.34, 319.02 and 152.59

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Solution

The fourth proportional to 231.34, 319.02 and 152.59 is: 210.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    231.34 : 319.02 = 152.59 : x
  2. Step 2: Convert to fraction form
    231.34/319.02 = 152.59/x
  3. Step 3: Cross multiply
    231.34x = 319.02 × 152.59
  4. Step 4: Simplify right side
    231.34x = 48,677.67
  5. Step 5: Solve for x
    x = 48,677.67/231.34
  6. Step 6: Final answer
    x = 210.42

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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.