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Finding the Fourth Proportional to 898.81, 1,242.08 and 732.97

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Solution

The fourth proportional to 898.81, 1,242.08 and 732.97 is: 1,012.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    898.81 : 1,242.08 = 732.97 : x
  2. Step 2: Convert to fraction form
    898.81/1,242.08 = 732.97/x
  3. Step 3: Cross multiply
    898.81x = 1,242.08 × 732.97
  4. Step 4: Simplify right side
    898.81x = 910,405.15
  5. Step 5: Solve for x
    x = 910,405.15/898.81
  6. Step 6: Final answer
    x = 1,012.90

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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.