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Finding the Fourth Proportional to 332.98, 499.31 and 101.90

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Solution

The fourth proportional to 332.98, 499.31 and 101.90 is: 152.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    332.98 : 499.31 = 101.90 : x
  2. Step 2: Convert to fraction form
    332.98/499.31 = 101.90/x
  3. Step 3: Cross multiply
    332.98x = 499.31 × 101.90
  4. Step 4: Simplify right side
    332.98x = 50,877.45
  5. Step 5: Solve for x
    x = 50,877.45/332.98
  6. Step 6: Final answer
    x = 152.80

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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.