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Finding the Fourth Proportional to 560.44, 839.85 and 317.44

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Solution

The fourth proportional to 560.44, 839.85 and 317.44 is: 475.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    560.44 : 839.85 = 317.44 : x
  2. Step 2: Convert to fraction form
    560.44/839.85 = 317.44/x
  3. Step 3: Cross multiply
    560.44x = 839.85 × 317.44
  4. Step 4: Simplify right side
    560.44x = 266,601.98
  5. Step 5: Solve for x
    x = 266,601.98/560.44
  6. Step 6: Final answer
    x = 475.70

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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.