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Finding the Fourth Proportional to 555.32, 766.38 and 359.40

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Solution

The fourth proportional to 555.32, 766.38 and 359.40 is: 496.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    555.32 : 766.38 = 359.40 : x
  2. Step 2: Convert to fraction form
    555.32/766.38 = 359.40/x
  3. Step 3: Cross multiply
    555.32x = 766.38 × 359.40
  4. Step 4: Simplify right side
    555.32x = 275,439.04
  5. Step 5: Solve for x
    x = 275,439.04/555.32
  6. Step 6: Final answer
    x = 496.00

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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.