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Finding the Fourth Proportional to 613.34, 920.16 and 174.58

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Solution

The fourth proportional to 613.34, 920.16 and 174.58 is: 261.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    613.34 : 920.16 = 174.58 : x
  2. Step 2: Convert to fraction form
    613.34/920.16 = 174.58/x
  3. Step 3: Cross multiply
    613.34x = 920.16 × 174.58
  4. Step 4: Simplify right side
    613.34x = 160,641.53
  5. Step 5: Solve for x
    x = 160,641.53/613.34
  6. Step 6: Final answer
    x = 261.91

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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.