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Finding the Fourth Proportional to 348.40, 522.39 and 117.23

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Solution

The fourth proportional to 348.40, 522.39 and 117.23 is: 175.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    348.40 : 522.39 = 117.23 : x
  2. Step 2: Convert to fraction form
    348.40/522.39 = 117.23/x
  3. Step 3: Cross multiply
    348.40x = 522.39 × 117.23
  4. Step 4: Simplify right side
    348.40x = 61,237.17
  5. Step 5: Solve for x
    x = 61,237.17/348.40
  6. Step 6: Final answer
    x = 175.77

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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.