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Finding the Fourth Proportional to 219.03, 328.59 and 64.96

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Solution

The fourth proportional to 219.03, 328.59 and 64.96 is: 97.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    219.03 : 328.59 = 64.96 : x
  2. Step 2: Convert to fraction form
    219.03/328.59 = 64.96/x
  3. Step 3: Cross multiply
    219.03x = 328.59 × 64.96
  4. Step 4: Simplify right side
    219.03x = 21,345.21
  5. Step 5: Solve for x
    x = 21,345.21/219.03
  6. Step 6: Final answer
    x = 97.45

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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.