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Finding the Fourth Proportional to 457.34, 685.55 and 183.35

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Solution

The fourth proportional to 457.34, 685.55 and 183.35 is: 274.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    457.34 : 685.55 = 183.35 : x
  2. Step 2: Convert to fraction form
    457.34/685.55 = 183.35/x
  3. Step 3: Cross multiply
    457.34x = 685.55 × 183.35
  4. Step 4: Simplify right side
    457.34x = 125,691.25
  5. Step 5: Solve for x
    x = 125,691.25/457.34
  6. Step 6: Final answer
    x = 274.83

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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.