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Finding the Fourth Proportional to 541.02, 812.21 and 432.68

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Solution

The fourth proportional to 541.02, 812.21 and 432.68 is: 649.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    541.02 : 812.21 = 432.68 : x
  2. Step 2: Convert to fraction form
    541.02/812.21 = 432.68/x
  3. Step 3: Cross multiply
    541.02x = 812.21 × 432.68
  4. Step 4: Simplify right side
    541.02x = 351,422.83
  5. Step 5: Solve for x
    x = 351,422.83/541.02
  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.