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Finding the Fourth Proportional to 470.84, 705.98 and 193.11

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Solution

The fourth proportional to 470.84, 705.98 and 193.11 is: 289.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    470.84 : 705.98 = 193.11 : x
  2. Step 2: Convert to fraction form
    470.84/705.98 = 193.11/x
  3. Step 3: Cross multiply
    470.84x = 705.98 × 193.11
  4. Step 4: Simplify right side
    470.84x = 136,330.80
  5. Step 5: Solve for x
    x = 136,330.80/470.84
  6. Step 6: Final answer
    x = 289.55

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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.