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Finding the Fourth Proportional to 560.92, 838.96 and 405.08

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Solution

The fourth proportional to 560.92, 838.96 and 405.08 is: 605.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    560.92 : 838.96 = 405.08 : x
  2. Step 2: Convert to fraction form
    560.92/838.96 = 405.08/x
  3. Step 3: Cross multiply
    560.92x = 838.96 × 405.08
  4. Step 4: Simplify right side
    560.92x = 339,845.92
  5. Step 5: Solve for x
    x = 339,845.92/560.92
  6. Step 6: Final answer
    x = 605.87

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.