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Finding the Fourth Proportional to 429.40, 592.54 and 242.85

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Solution

The fourth proportional to 429.40, 592.54 and 242.85 is: 335.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    429.40 : 592.54 = 242.85 : x
  2. Step 2: Convert to fraction form
    429.40/592.54 = 242.85/x
  3. Step 3: Cross multiply
    429.40x = 592.54 × 242.85
  4. Step 4: Simplify right side
    429.40x = 143,897.73
  5. Step 5: Solve for x
    x = 143,897.73/429.40
  6. Step 6: Final answer
    x = 335.12

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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.