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Finding the Fourth Proportional to 348.54, 522.74 and 117.40

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Solution

The fourth proportional to 348.54, 522.74 and 117.40 is: 176.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    348.54 : 522.74 = 117.40 : x
  2. Step 2: Convert to fraction form
    348.54/522.74 = 117.40/x
  3. Step 3: Cross multiply
    348.54x = 522.74 × 117.40
  4. Step 4: Simplify right side
    348.54x = 61,369.68
  5. Step 5: Solve for x
    x = 61,369.68/348.54
  6. Step 6: Final answer
    x = 176.08

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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.