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Finding the Fourth Proportional to 504.67, 695.50 and 393.97

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Solution

The fourth proportional to 504.67, 695.50 and 393.97 is: 542.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    504.67 : 695.50 = 393.97 : x
  2. Step 2: Convert to fraction form
    504.67/695.50 = 393.97/x
  3. Step 3: Cross multiply
    504.67x = 695.50 × 393.97
  4. Step 4: Simplify right side
    504.67x = 274,006.14
  5. Step 5: Solve for x
    x = 274,006.14/504.67
  6. Step 6: Final answer
    x = 542.94

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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.