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Finding the Fourth Proportional to 1,155.99, 1,733.99 and 539.99

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Solution

The fourth proportional to 1,155.99, 1,733.99 and 539.99 is: 809.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,155.99 : 1,733.99 = 539.99 : x
  2. Step 2: Convert to fraction form
    1,155.99/1,733.99 = 539.99/x
  3. Step 3: Cross multiply
    1,155.99x = 1,733.99 × 539.99
  4. Step 4: Simplify right side
    1,155.99x = 936,325.89
  5. Step 5: Solve for x
    x = 936,325.89/1,155.99
  6. Step 6: Final answer
    x = 809.98

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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.