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Finding the Fourth Proportional to 555.06, 832.32 and 393.06

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Solution

The fourth proportional to 555.06, 832.32 and 393.06 is: 589.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    555.06 : 832.32 = 393.06 : x
  2. Step 2: Convert to fraction form
    555.06/832.32 = 393.06/x
  3. Step 3: Cross multiply
    555.06x = 832.32 × 393.06
  4. Step 4: Simplify right side
    555.06x = 327,151.70
  5. Step 5: Solve for x
    x = 327,151.70/555.06
  6. Step 6: Final answer
    x = 589.40

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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.