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Finding the Fourth Proportional to 899.01, 1,239.76 and 544.98

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Solution

The fourth proportional to 899.01, 1,239.76 and 544.98 is: 751.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    899.01 : 1,239.76 = 544.98 : x
  2. Step 2: Convert to fraction form
    899.01/1,239.76 = 544.98/x
  3. Step 3: Cross multiply
    899.01x = 1,239.76 × 544.98
  4. Step 4: Simplify right side
    899.01x = 675,647.54
  5. Step 5: Solve for x
    x = 675,647.54/899.01
  6. Step 6: Final answer
    x = 751.55

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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.