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Finding the Fourth Proportional to 1,014.48, 1,399.95 and 572.45

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Solution

The fourth proportional to 1,014.48, 1,399.95 and 572.45 is: 789.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,014.48 : 1,399.95 = 572.45 : x
  2. Step 2: Convert to fraction form
    1,014.48/1,399.95 = 572.45/x
  3. Step 3: Cross multiply
    1,014.48x = 1,399.95 × 572.45
  4. Step 4: Simplify right side
    1,014.48x = 801,394.38
  5. Step 5: Solve for x
    x = 801,394.38/1,014.48
  6. Step 6: Final answer
    x = 789.96

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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.