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Finding the Fourth Proportional to 991.59, 1,483.94 and 601.38

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Solution

The fourth proportional to 991.59, 1,483.94 and 601.38 is: 899.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    991.59 : 1,483.94 = 601.38 : x
  2. Step 2: Convert to fraction form
    991.59/1,483.94 = 601.38/x
  3. Step 3: Cross multiply
    991.59x = 1,483.94 × 601.38
  4. Step 4: Simplify right side
    991.59x = 892,408.83
  5. Step 5: Solve for x
    x = 892,408.83/991.59
  6. Step 6: Final answer
    x = 899.98

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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.