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Finding the Fourth Proportional to 348.66, 523.08 and 117.45

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Solution

The fourth proportional to 348.66, 523.08 and 117.45 is: 176.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    348.66 : 523.08 = 117.45 : x
  2. Step 2: Convert to fraction form
    348.66/523.08 = 117.45/x
  3. Step 3: Cross multiply
    348.66x = 523.08 × 117.45
  4. Step 4: Simplify right side
    348.66x = 61,435.75
  5. Step 5: Solve for x
    x = 61,435.75/348.66
  6. Step 6: Final answer
    x = 176.21

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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.