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Finding the Fourth Proportional to 470.68, 706.12 and 178.18

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Solution

The fourth proportional to 470.68, 706.12 and 178.18 is: 267.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    470.68 : 706.12 = 178.18 : x
  2. Step 2: Convert to fraction form
    470.68/706.12 = 178.18/x
  3. Step 3: Cross multiply
    470.68x = 706.12 × 178.18
  4. Step 4: Simplify right side
    470.68x = 125,816.46
  5. Step 5: Solve for x
    x = 125,816.46/470.68
  6. Step 6: Final answer
    x = 267.31

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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.