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Finding the Fourth Proportional to 219.18, 328.18 and 175.64

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Solution

The fourth proportional to 219.18, 328.18 and 175.64 is: 262.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    219.18 : 328.18 = 175.64 : x
  2. Step 2: Convert to fraction form
    219.18/328.18 = 175.64/x
  3. Step 3: Cross multiply
    219.18x = 328.18 × 175.64
  4. Step 4: Simplify right side
    219.18x = 57,641.54
  5. Step 5: Solve for x
    x = 57,641.54/219.18
  6. Step 6: Final answer
    x = 262.99

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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.