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Finding the Fourth Proportional to 614.31, 847.58 and 482.91

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Solution

The fourth proportional to 614.31, 847.58 and 482.91 is: 666.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    614.31 : 847.58 = 482.91 : x
  2. Step 2: Convert to fraction form
    614.31/847.58 = 482.91/x
  3. Step 3: Cross multiply
    614.31x = 847.58 × 482.91
  4. Step 4: Simplify right side
    614.31x = 409,302.44
  5. Step 5: Solve for x
    x = 409,302.44/614.31
  6. Step 6: Final answer
    x = 666.28

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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.