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Finding the Fourth Proportional to 328.32, 452.93 and 229.91

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Solution

The fourth proportional to 328.32, 452.93 and 229.91 is: 317.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    328.32 : 452.93 = 229.91 : x
  2. Step 2: Convert to fraction form
    328.32/452.93 = 229.91/x
  3. Step 3: Cross multiply
    328.32x = 452.93 × 229.91
  4. Step 4: Simplify right side
    328.32x = 104,129.72
  5. Step 5: Solve for x
    x = 104,129.72/328.32
  6. Step 6: Final answer
    x = 317.16

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.