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Finding the Fourth Proportional to 523.40, 722.48 and 348.75

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Solution

The fourth proportional to 523.40, 722.48 and 348.75 is: 481.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    523.40 : 722.48 = 348.75 : x
  2. Step 2: Convert to fraction form
    523.40/722.48 = 348.75/x
  3. Step 3: Cross multiply
    523.40x = 722.48 × 348.75
  4. Step 4: Simplify right side
    523.40x = 251,963.16
  5. Step 5: Solve for x
    x = 251,963.16/523.40
  6. Step 6: Final answer
    x = 481.40

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.