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Finding the Fourth Proportional to 614.95, 919.89 and 560.88

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Solution

The fourth proportional to 614.95, 919.89 and 560.88 is: 839.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    614.95 : 919.89 = 560.88 : x
  2. Step 2: Convert to fraction form
    614.95/919.89 = 560.88/x
  3. Step 3: Cross multiply
    614.95x = 919.89 × 560.88
  4. Step 4: Simplify right side
    614.95x = 515,947.90
  5. Step 5: Solve for x
    x = 515,947.90/614.95
  6. Step 6: Final answer
    x = 839.01

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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.