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Finding the Fourth Proportional to 898.52, 1,347.90 and 321.26

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Solution

The fourth proportional to 898.52, 1,347.90 and 321.26 is: 481.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    898.52 : 1,347.90 = 321.26 : x
  2. Step 2: Convert to fraction form
    898.52/1,347.90 = 321.26/x
  3. Step 3: Cross multiply
    898.52x = 1,347.90 × 321.26
  4. Step 4: Simplify right side
    898.52x = 433,026.35
  5. Step 5: Solve for x
    x = 433,026.35/898.52
  6. Step 6: Final answer
    x = 481.93

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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.