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Finding the Fourth Proportional to 888.34, 1,332.57 and 455.80

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Solution

The fourth proportional to 888.34, 1,332.57 and 455.80 is: 683.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    888.34 : 1,332.57 = 455.80 : x
  2. Step 2: Convert to fraction form
    888.34/1,332.57 = 455.80/x
  3. Step 3: Cross multiply
    888.34x = 1,332.57 × 455.80
  4. Step 4: Simplify right side
    888.34x = 607,378.74
  5. Step 5: Solve for x
    x = 607,378.74/888.34
  6. Step 6: Final answer
    x = 683.73

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.