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Finding the Fourth Proportional to 555.92, 832.79 and 433.61

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Solution

The fourth proportional to 555.92, 832.79 and 433.61 is: 649.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    555.92 : 832.79 = 433.61 : x
  2. Step 2: Convert to fraction form
    555.92/832.79 = 433.61/x
  3. Step 3: Cross multiply
    555.92x = 832.79 × 433.61
  4. Step 4: Simplify right side
    555.92x = 361,106.07
  5. Step 5: Solve for x
    x = 361,106.07/555.92
  6. Step 6: Final answer
    x = 649.56

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.