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Finding the Fourth Proportional to 328.66, 494.94 and 237.99

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Solution

The fourth proportional to 328.66, 494.94 and 237.99 is: 358.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    328.66 : 494.94 = 237.99 : x
  2. Step 2: Convert to fraction form
    328.66/494.94 = 237.99/x
  3. Step 3: Cross multiply
    328.66x = 494.94 × 237.99
  4. Step 4: Simplify right side
    328.66x = 117,790.77
  5. Step 5: Solve for x
    x = 117,790.77/328.66
  6. Step 6: Final answer
    x = 358.40

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.