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Finding the Fourth Proportional to 556.70, 834.95 and 186.45

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Solution

The fourth proportional to 556.70, 834.95 and 186.45 is: 279.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    556.70 : 834.95 = 186.45 : x
  2. Step 2: Convert to fraction form
    556.70/834.95 = 186.45/x
  3. Step 3: Cross multiply
    556.70x = 834.95 × 186.45
  4. Step 4: Simplify right side
    556.70x = 155,673.76
  5. Step 5: Solve for x
    x = 155,673.76/556.70
  6. Step 6: Final answer
    x = 279.64

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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.