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Finding the Fourth Proportional to 1,019.14, 1,527.11 and 788.59

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Solution

The fourth proportional to 1,019.14, 1,527.11 and 788.59 is: 1,181.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,019.14 : 1,527.11 = 788.59 : x
  2. Step 2: Convert to fraction form
    1,019.14/1,527.11 = 788.59/x
  3. Step 3: Cross multiply
    1,019.14x = 1,527.11 × 788.59
  4. Step 4: Simplify right side
    1,019.14x = 1,204,263.67
  5. Step 5: Solve for x
    x = 1,204,263.67/1,019.14
  6. Step 6: Final answer
    x = 1,181.65

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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.