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Finding the Fourth Proportional to 1,558.71, 2,338.11 and 900.18

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Solution

The fourth proportional to 1,558.71, 2,338.11 and 900.18 is: 1,350.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,558.71 : 2,338.11 = 900.18 : x
  2. Step 2: Convert to fraction form
    1,558.71/2,338.11 = 900.18/x
  3. Step 3: Cross multiply
    1,558.71x = 2,338.11 × 900.18
  4. Step 4: Simplify right side
    1,558.71x = 2,104,719.86
  5. Step 5: Solve for x
    x = 2,104,719.86/1,558.71
  6. Step 6: Final answer
    x = 1,350.30

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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.