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Finding the Fourth Proportional to 900.92, 1,346.12 and 881.48

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Solution

The fourth proportional to 900.92, 1,346.12 and 881.48 is: 1,317.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    900.92 : 1,346.12 = 881.48 : x
  2. Step 2: Convert to fraction form
    900.92/1,346.12 = 881.48/x
  3. Step 3: Cross multiply
    900.92x = 1,346.12 × 881.48
  4. Step 4: Simplify right side
    900.92x = 1,186,580.12
  5. Step 5: Solve for x
    x = 1,186,580.12/900.92
  6. Step 6: Final answer
    x = 1,317.07

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.