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Finding the Fourth Proportional to 557.82, 770.36 and 425.04

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Solution

The fourth proportional to 557.82, 770.36 and 425.04 is: 586.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    557.82 : 770.36 = 425.04 : x
  2. Step 2: Convert to fraction form
    557.82/770.36 = 425.04/x
  3. Step 3: Cross multiply
    557.82x = 770.36 × 425.04
  4. Step 4: Simplify right side
    557.82x = 327,434.88
  5. Step 5: Solve for x
    x = 327,434.88/557.82
  6. Step 6: Final answer
    x = 586.99

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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.