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Finding the Fourth Proportional to 845.99, 1,268.74 and 358.70

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Solution

The fourth proportional to 845.99, 1,268.74 and 358.70 is: 537.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    845.99 : 1,268.74 = 358.70 : x
  2. Step 2: Convert to fraction form
    845.99/1,268.74 = 358.70/x
  3. Step 3: Cross multiply
    845.99x = 1,268.74 × 358.70
  4. Step 4: Simplify right side
    845.99x = 455,095.24
  5. Step 5: Solve for x
    x = 455,095.24/845.99
  6. Step 6: Final answer
    x = 537.95

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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.