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Finding the Fourth Proportional to 614.16, 847.80 and 427.92

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Solution

The fourth proportional to 614.16, 847.80 and 427.92 is: 590.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    614.16 : 847.80 = 427.92 : x
  2. Step 2: Convert to fraction form
    614.16/847.80 = 427.92/x
  3. Step 3: Cross multiply
    614.16x = 847.80 × 427.92
  4. Step 4: Simplify right side
    614.16x = 362,790.58
  5. Step 5: Solve for x
    x = 362,790.58/614.16
  6. Step 6: Final answer
    x = 590.71

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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.