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Finding the Fourth Proportional to 654.09, 902.78 and 433.07

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Solution

The fourth proportional to 654.09, 902.78 and 433.07 is: 597.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    654.09 : 902.78 = 433.07 : x
  2. Step 2: Convert to fraction form
    654.09/902.78 = 433.07/x
  3. Step 3: Cross multiply
    654.09x = 902.78 × 433.07
  4. Step 4: Simplify right side
    654.09x = 390,966.93
  5. Step 5: Solve for x
    x = 390,966.93/654.09
  6. Step 6: Final answer
    x = 597.73

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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.