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Finding the Fourth Proportional to 322.08, 482.88 and 148.86

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Solution

The fourth proportional to 322.08, 482.88 and 148.86 is: 223.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    322.08 : 482.88 = 148.86 : x
  2. Step 2: Convert to fraction form
    322.08/482.88 = 148.86/x
  3. Step 3: Cross multiply
    322.08x = 482.88 × 148.86
  4. Step 4: Simplify right side
    322.08x = 71,881.52
  5. Step 5: Solve for x
    x = 71,881.52/322.08
  6. Step 6: Final answer
    x = 223.18

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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.