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Finding the Fourth Proportional to 556.98, 834.36 and 289.38

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Solution

The fourth proportional to 556.98, 834.36 and 289.38 is: 433.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    556.98 : 834.36 = 289.38 : x
  2. Step 2: Convert to fraction form
    556.98/834.36 = 289.38/x
  3. Step 3: Cross multiply
    556.98x = 834.36 × 289.38
  4. Step 4: Simplify right side
    556.98x = 241,447.10
  5. Step 5: Solve for x
    x = 241,447.10/556.98
  6. Step 6: Final answer
    x = 433.49

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Double scale
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Similar ratio
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1.5x scale

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.