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Finding the Fourth Proportional to 523.05, 722.75 and 497.74

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Solution

The fourth proportional to 523.05, 722.75 and 497.74 is: 687.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    523.05 : 722.75 = 497.74 : x
  2. Step 2: Convert to fraction form
    523.05/722.75 = 497.74/x
  3. Step 3: Cross multiply
    523.05x = 722.75 × 497.74
  4. Step 4: Simplify right side
    523.05x = 359,741.59
  5. Step 5: Solve for x
    x = 359,741.59/523.05
  6. Step 6: Final answer
    x = 687.78

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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.