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Finding the Fourth Proportional to 614.40, 919.96 and 541.52

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Solution

The fourth proportional to 614.40, 919.96 and 541.52 is: 810.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    614.40 : 919.96 = 541.52 : x
  2. Step 2: Convert to fraction form
    614.40/919.96 = 541.52/x
  3. Step 3: Cross multiply
    614.40x = 919.96 × 541.52
  4. Step 4: Simplify right side
    614.40x = 498,176.74
  5. Step 5: Solve for x
    x = 498,176.74/614.40
  6. Step 6: Final answer
    x = 810.83

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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.