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Finding the Fourth Proportional to 555.39, 766.08 and 359.01

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Solution

The fourth proportional to 555.39, 766.08 and 359.01 is: 495.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    555.39 : 766.08 = 359.01 : x
  2. Step 2: Convert to fraction form
    555.39/766.08 = 359.01/x
  3. Step 3: Cross multiply
    555.39x = 766.08 × 359.01
  4. Step 4: Simplify right side
    555.39x = 275,030.38
  5. Step 5: Solve for x
    x = 275,030.38/555.39
  6. Step 6: Final answer
    x = 495.20

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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.