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Finding the Fourth Proportional to 592.34, 890.09 and 318.63

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Solution

The fourth proportional to 592.34, 890.09 and 318.63 is: 478.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    592.34 : 890.09 = 318.63 : x
  2. Step 2: Convert to fraction form
    592.34/890.09 = 318.63/x
  3. Step 3: Cross multiply
    592.34x = 890.09 × 318.63
  4. Step 4: Simplify right side
    592.34x = 283,607.78
  5. Step 5: Solve for x
    x = 283,607.78/592.34
  6. Step 6: Final answer
    x = 478.79

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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.