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Finding the Fourth Proportional to 560.59, 840.82 and 379.15

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Solution

The fourth proportional to 560.59, 840.82 and 379.15 is: 568.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    560.59 : 840.82 = 379.15 : x
  2. Step 2: Convert to fraction form
    560.59/840.82 = 379.15/x
  3. Step 3: Cross multiply
    560.59x = 840.82 × 379.15
  4. Step 4: Simplify right side
    560.59x = 318,796.90
  5. Step 5: Solve for x
    x = 318,796.90/560.59
  6. Step 6: Final answer
    x = 568.68

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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.