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Finding the Fourth Proportional to 456.24, 684.36 and 148.12

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Solution

The fourth proportional to 456.24, 684.36 and 148.12 is: 222.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    456.24 : 684.36 = 148.12 : x
  2. Step 2: Convert to fraction form
    456.24/684.36 = 148.12/x
  3. Step 3: Cross multiply
    456.24x = 684.36 × 148.12
  4. Step 4: Simplify right side
    456.24x = 101,367.40
  5. Step 5: Solve for x
    x = 101,367.40/456.24
  6. Step 6: Final answer
    x = 222.18

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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.