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Finding the Fourth Proportional to 429.18, 591.32 and 303.08

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Solution

The fourth proportional to 429.18, 591.32 and 303.08 is: 417.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    429.18 : 591.32 = 303.08 : x
  2. Step 2: Convert to fraction form
    429.18/591.32 = 303.08/x
  3. Step 3: Cross multiply
    429.18x = 591.32 × 303.08
  4. Step 4: Simplify right side
    429.18x = 179,218.37
  5. Step 5: Solve for x
    x = 179,218.37/429.18
  6. Step 6: Final answer
    x = 417.59

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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.