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Finding the Fourth Proportional to 900.36, 1,241.86 and 564.36

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Solution

The fourth proportional to 900.36, 1,241.86 and 564.36 is: 778.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    900.36 : 1,241.86 = 564.36 : x
  2. Step 2: Convert to fraction form
    900.36/1,241.86 = 564.36/x
  3. Step 3: Cross multiply
    900.36x = 1,241.86 × 564.36
  4. Step 4: Simplify right side
    900.36x = 700,856.11
  5. Step 5: Solve for x
    x = 700,856.11/900.36
  6. Step 6: Final answer
    x = 778.42

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1.5x scale

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.