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Finding the Fourth Proportional to 429.92, 592.82 and 319.60

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Solution

The fourth proportional to 429.92, 592.82 and 319.60 is: 440.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    429.92 : 592.82 = 319.60 : x
  2. Step 2: Convert to fraction form
    429.92/592.82 = 319.60/x
  3. Step 3: Cross multiply
    429.92x = 592.82 × 319.60
  4. Step 4: Simplify right side
    429.92x = 189,465.27
  5. Step 5: Solve for x
    x = 189,465.27/429.92
  6. Step 6: Final answer
    x = 440.70

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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.