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Finding the Fourth Proportional to 611.29, 915.55 and 367.30

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Solution

The fourth proportional to 611.29, 915.55 and 367.30 is: 550.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    611.29 : 915.55 = 367.30 : x
  2. Step 2: Convert to fraction form
    611.29/915.55 = 367.30/x
  3. Step 3: Cross multiply
    611.29x = 915.55 × 367.30
  4. Step 4: Simplify right side
    611.29x = 336,278.31
  5. Step 5: Solve for x
    x = 336,278.31/611.29
  6. Step 6: Final answer
    x = 550.11

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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.