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Finding the Fourth Proportional to 557.72, 769.90 and 433.08

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Solution

The fourth proportional to 557.72, 769.90 and 433.08 is: 597.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    557.72 : 769.90 = 433.08 : x
  2. Step 2: Convert to fraction form
    557.72/769.90 = 433.08/x
  3. Step 3: Cross multiply
    557.72x = 769.90 × 433.08
  4. Step 4: Simplify right side
    557.72x = 333,428.29
  5. Step 5: Solve for x
    x = 333,428.29/557.72
  6. Step 6: Final answer
    x = 597.84

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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.