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Finding the Fourth Proportional to 1,785.22, 2,463.66 and 999.32

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Solution

The fourth proportional to 1,785.22, 2,463.66 and 999.32 is: 1,379.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,785.22 : 2,463.66 = 999.32 : x
  2. Step 2: Convert to fraction form
    1,785.22/2,463.66 = 999.32/x
  3. Step 3: Cross multiply
    1,785.22x = 2,463.66 × 999.32
  4. Step 4: Simplify right side
    1,785.22x = 2,461,984.71
  5. Step 5: Solve for x
    x = 2,461,984.71/1,785.22
  6. Step 6: Final answer
    x = 1,379.09

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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.