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Finding the Fourth Proportional to 913.29, 1,362.49 and 888.18

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Solution

The fourth proportional to 913.29, 1,362.49 and 888.18 is: 1,325.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    913.29 : 1,362.49 = 888.18 : x
  2. Step 2: Convert to fraction form
    913.29/1,362.49 = 888.18/x
  3. Step 3: Cross multiply
    913.29x = 1,362.49 × 888.18
  4. Step 4: Simplify right side
    913.29x = 1,210,136.37
  5. Step 5: Solve for x
    x = 1,210,136.37/913.29
  6. Step 6: Final answer
    x = 1,325.03

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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.