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Finding the Fourth Proportional to 310.12, 465.26 and 101.90

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Solution

The fourth proportional to 310.12, 465.26 and 101.90 is: 152.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    310.12 : 465.26 = 101.90 : x
  2. Step 2: Convert to fraction form
    310.12/465.26 = 101.90/x
  3. Step 3: Cross multiply
    310.12x = 465.26 × 101.90
  4. Step 4: Simplify right side
    310.12x = 47,409.99
  5. Step 5: Solve for x
    x = 47,409.99/310.12
  6. Step 6: Final answer
    x = 152.88

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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.