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Finding the Fourth Proportional to 524.67, 722.28 and 393.45

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Solution

The fourth proportional to 524.67, 722.28 and 393.45 is: 541.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    524.67 : 722.28 = 393.45 : x
  2. Step 2: Convert to fraction form
    524.67/722.28 = 393.45/x
  3. Step 3: Cross multiply
    524.67x = 722.28 × 393.45
  4. Step 4: Simplify right side
    524.67x = 284,177.45
  5. Step 5: Solve for x
    x = 284,177.45/524.67
  6. Step 6: Final answer
    x = 541.64

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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.