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Finding the Fourth Proportional to 322.61, 483.79 and 117.12

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Solution

The fourth proportional to 322.61, 483.79 and 117.12 is: 175.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    322.61 : 483.79 = 117.12 : x
  2. Step 2: Convert to fraction form
    322.61/483.79 = 117.12/x
  3. Step 3: Cross multiply
    322.61x = 483.79 × 117.12
  4. Step 4: Simplify right side
    322.61x = 56,661.48
  5. Step 5: Solve for x
    x = 56,661.48/322.61
  6. Step 6: Final answer
    x = 175.63

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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.