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Finding the Fourth Proportional to 429.13, 592.23 and 318.93

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Solution

The fourth proportional to 429.13, 592.23 and 318.93 is: 440.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    429.13 : 592.23 = 318.93 : x
  2. Step 2: Convert to fraction form
    429.13/592.23 = 318.93/x
  3. Step 3: Cross multiply
    429.13x = 592.23 × 318.93
  4. Step 4: Simplify right side
    429.13x = 188,879.91
  5. Step 5: Solve for x
    x = 188,879.91/429.13
  6. Step 6: Final answer
    x = 440.15

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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.