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Finding the Fourth Proportional to 1,231.60, 1,846.02 and 538.86

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Solution

The fourth proportional to 1,231.60, 1,846.02 and 538.86 is: 807.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,231.60 : 1,846.02 = 538.86 : x
  2. Step 2: Convert to fraction form
    1,231.60/1,846.02 = 538.86/x
  3. Step 3: Cross multiply
    1,231.60x = 1,846.02 × 538.86
  4. Step 4: Simplify right side
    1,231.60x = 994,746.34
  5. Step 5: Solve for x
    x = 994,746.34/1,231.60
  6. Step 6: Final answer
    x = 807.69

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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.