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Finding the Fourth Proportional to 332.54, 458.64 and 220.40

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Solution

The fourth proportional to 332.54, 458.64 and 220.40 is: 303.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    332.54 : 458.64 = 220.40 : x
  2. Step 2: Convert to fraction form
    332.54/458.64 = 220.40/x
  3. Step 3: Cross multiply
    332.54x = 458.64 × 220.40
  4. Step 4: Simplify right side
    332.54x = 101,084.26
  5. Step 5: Solve for x
    x = 101,084.26/332.54
  6. Step 6: Final answer
    x = 303.98

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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.