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Finding the Fourth Proportional to 614.40, 845.52 and 574.26

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Solution

The fourth proportional to 614.40, 845.52 and 574.26 is: 790.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    614.40 : 845.52 = 574.26 : x
  2. Step 2: Convert to fraction form
    614.40/845.52 = 574.26/x
  3. Step 3: Cross multiply
    614.40x = 845.52 × 574.26
  4. Step 4: Simplify right side
    614.40x = 485,548.32
  5. Step 5: Solve for x
    x = 485,548.32/614.40
  6. Step 6: Final answer
    x = 790.28

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.