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Finding the Fourth Proportional to 557.64, 769.82 and 433.02

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Solution

The fourth proportional to 557.64, 769.82 and 433.02 is: 597.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    557.64 : 769.82 = 433.02 : x
  2. Step 2: Convert to fraction form
    557.64/769.82 = 433.02/x
  3. Step 3: Cross multiply
    557.64x = 769.82 × 433.02
  4. Step 4: Simplify right side
    557.64x = 333,347.46
  5. Step 5: Solve for x
    x = 333,347.46/557.64
  6. Step 6: Final answer
    x = 597.78

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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.