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Finding the Fourth Proportional to 1,112.03, 1,667.01 and 556.40

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Solution

The fourth proportional to 1,112.03, 1,667.01 and 556.40 is: 834.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,112.03 : 1,667.01 = 556.40 : x
  2. Step 2: Convert to fraction form
    1,112.03/1,667.01 = 556.40/x
  3. Step 3: Cross multiply
    1,112.03x = 1,667.01 × 556.40
  4. Step 4: Simplify right side
    1,112.03x = 927,513.25
  5. Step 5: Solve for x
    x = 927,513.25/1,112.03
  6. Step 6: Final answer
    x = 834.07

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1.5x scale

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.