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Finding the Fourth Proportional to 888.51, 1,225.94 and 539.13

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Solution

The fourth proportional to 888.51, 1,225.94 and 539.13 is: 743.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    888.51 : 1,225.94 = 539.13 : x
  2. Step 2: Convert to fraction form
    888.51/1,225.94 = 539.13/x
  3. Step 3: Cross multiply
    888.51x = 1,225.94 × 539.13
  4. Step 4: Simplify right side
    888.51x = 660,938.34
  5. Step 5: Solve for x
    x = 660,938.34/888.51
  6. Step 6: Final answer
    x = 743.87

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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.