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Finding the Fourth Proportional to 901.22, 1,352.40 and 657.14

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Solution

The fourth proportional to 901.22, 1,352.40 and 657.14 is: 986.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    901.22 : 1,352.40 = 657.14 : x
  2. Step 2: Convert to fraction form
    901.22/1,352.40 = 657.14/x
  3. Step 3: Cross multiply
    901.22x = 1,352.40 × 657.14
  4. Step 4: Simplify right side
    901.22x = 888,716.14
  5. Step 5: Solve for x
    x = 888,716.14/901.22
  6. Step 6: Final answer
    x = 986.13

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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.