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Finding the Fourth Proportional to 523.74, 722.61 and 313.83

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Solution

The fourth proportional to 523.74, 722.61 and 313.83 is: 432.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    523.74 : 722.61 = 313.83 : x
  2. Step 2: Convert to fraction form
    523.74/722.61 = 313.83/x
  3. Step 3: Cross multiply
    523.74x = 722.61 × 313.83
  4. Step 4: Simplify right side
    523.74x = 226,776.70
  5. Step 5: Solve for x
    x = 226,776.70/523.74
  6. Step 6: Final answer
    x = 432.99

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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.