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Finding the Fourth Proportional to 1,558.47, 2,338.58 and 585.26

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Solution

The fourth proportional to 1,558.47, 2,338.58 and 585.26 is: 878.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,558.47 : 2,338.58 = 585.26 : x
  2. Step 2: Convert to fraction form
    1,558.47/2,338.58 = 585.26/x
  3. Step 3: Cross multiply
    1,558.47x = 2,338.58 × 585.26
  4. Step 4: Simplify right side
    1,558.47x = 1,368,677.33
  5. Step 5: Solve for x
    x = 1,368,677.33/1,558.47
  6. Step 6: Final answer
    x = 878.22

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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.