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Finding the Fourth Proportional to 433.11, 595.56 and 420.15

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Solution

The fourth proportional to 433.11, 595.56 and 420.15 is: 577.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    433.11 : 595.56 = 420.15 : x
  2. Step 2: Convert to fraction form
    433.11/595.56 = 420.15/x
  3. Step 3: Cross multiply
    433.11x = 595.56 × 420.15
  4. Step 4: Simplify right side
    433.11x = 250,224.53
  5. Step 5: Solve for x
    x = 250,224.53/433.11
  6. Step 6: Final answer
    x = 577.74

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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.