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Finding the Fourth Proportional to 999.32, 1,499.06 and 340.97

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Solution

The fourth proportional to 999.32, 1,499.06 and 340.97 is: 511.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    999.32 : 1,499.06 = 340.97 : x
  2. Step 2: Convert to fraction form
    999.32/1,499.06 = 340.97/x
  3. Step 3: Cross multiply
    999.32x = 1,499.06 × 340.97
  4. Step 4: Simplify right side
    999.32x = 511,139.09
  5. Step 5: Solve for x
    x = 511,139.09/999.32
  6. Step 6: Final answer
    x = 511.49

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1.5x scale

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.