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Finding the Fourth Proportional to 898.33, 1,239.95 and 549.37

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Solution

The fourth proportional to 898.33, 1,239.95 and 549.37 is: 758.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    898.33 : 1,239.95 = 549.37 : x
  2. Step 2: Convert to fraction form
    898.33/1,239.95 = 549.37/x
  3. Step 3: Cross multiply
    898.33x = 1,239.95 × 549.37
  4. Step 4: Simplify right side
    898.33x = 681,188.58
  5. Step 5: Solve for x
    x = 681,188.58/898.33
  6. Step 6: Final answer
    x = 758.28

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.