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Finding the Fourth Proportional to 888.33, 1,225.96 and 515.53

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Solution

The fourth proportional to 888.33, 1,225.96 and 515.53 is: 711.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    888.33 : 1,225.96 = 515.53 : x
  2. Step 2: Convert to fraction form
    888.33/1,225.96 = 515.53/x
  3. Step 3: Cross multiply
    888.33x = 1,225.96 × 515.53
  4. Step 4: Simplify right side
    888.33x = 632,012.93
  5. Step 5: Solve for x
    x = 632,012.93/888.33
  6. Step 6: Final answer
    x = 711.46

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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.