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Finding the Fourth Proportional to 899.31, 1,348.62 and 351.43

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Solution

The fourth proportional to 899.31, 1,348.62 and 351.43 is: 527.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    899.31 : 1,348.62 = 351.43 : x
  2. Step 2: Convert to fraction form
    899.31/1,348.62 = 351.43/x
  3. Step 3: Cross multiply
    899.31x = 1,348.62 × 351.43
  4. Step 4: Simplify right side
    899.31x = 473,945.53
  5. Step 5: Solve for x
    x = 473,945.53/899.31
  6. Step 6: Final answer
    x = 527.01

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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.