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Finding the Fourth Proportional to 560.11, 840.26 and 231.05

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Solution

The fourth proportional to 560.11, 840.26 and 231.05 is: 346.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    560.11 : 840.26 = 231.05 : x
  2. Step 2: Convert to fraction form
    560.11/840.26 = 231.05/x
  3. Step 3: Cross multiply
    560.11x = 840.26 × 231.05
  4. Step 4: Simplify right side
    560.11x = 194,138.45
  5. Step 5: Solve for x
    x = 194,138.45/560.11
  6. Step 6: Final answer
    x = 346.61

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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.