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Finding the Fourth Proportional to 429.89, 593.45 and 282.57

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Solution

The fourth proportional to 429.89, 593.45 and 282.57 is: 390.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    429.89 : 593.45 = 282.57 : x
  2. Step 2: Convert to fraction form
    429.89/593.45 = 282.57/x
  3. Step 3: Cross multiply
    429.89x = 593.45 × 282.57
  4. Step 4: Simplify right side
    429.89x = 167,689.75
  5. Step 5: Solve for x
    x = 167,689.75/429.89
  6. Step 6: Final answer
    x = 390.08

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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.