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Finding the Fourth Proportional to 611.24, 917.28 and 337.55

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Solution

The fourth proportional to 611.24, 917.28 and 337.55 is: 506.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    611.24 : 917.28 = 337.55 : x
  2. Step 2: Convert to fraction form
    611.24/917.28 = 337.55/x
  3. Step 3: Cross multiply
    611.24x = 917.28 × 337.55
  4. Step 4: Simplify right side
    611.24x = 309,623.28
  5. Step 5: Solve for x
    x = 309,623.28/611.24
  6. Step 6: Final answer
    x = 506.55

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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.