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Finding the Fourth Proportional to 903.60, 1,347.69 and 888

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Solution

The fourth proportional to 903.60, 1,347.69 and 888 is: 1,324.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    903.60 : 1,347.69 = 888 : x
  2. Step 2: Convert to fraction form
    903.60/1,347.69 = 888/x
  3. Step 3: Cross multiply
    903.60x = 1,347.69 × 888
  4. Step 4: Simplify right side
    903.60x = 1,196,748.72
  5. Step 5: Solve for x
    x = 1,196,748.72/903.60
  6. Step 6: Final answer
    x = 1,324.42

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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.