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Finding the Fourth Proportional to 654.80, 902.96 and 433.76

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Solution

The fourth proportional to 654.80, 902.96 and 433.76 is: 598.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    654.80 : 902.96 = 433.76 : x
  2. Step 2: Convert to fraction form
    654.80/902.96 = 433.76/x
  3. Step 3: Cross multiply
    654.80x = 902.96 × 433.76
  4. Step 4: Simplify right side
    654.80x = 391,667.93
  5. Step 5: Solve for x
    x = 391,667.93/654.80
  6. Step 6: Final answer
    x = 598.15

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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.