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Finding the Fourth Proportional to 429.45, 592.52 and 305.43

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Solution

The fourth proportional to 429.45, 592.52 and 305.43 is: 421.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    429.45 : 592.52 = 305.43 : x
  2. Step 2: Convert to fraction form
    429.45/592.52 = 305.43/x
  3. Step 3: Cross multiply
    429.45x = 592.52 × 305.43
  4. Step 4: Simplify right side
    429.45x = 180,971.86
  5. Step 5: Solve for x
    x = 180,971.86/429.45
  6. Step 6: Final answer
    x = 421.40

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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.