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Finding the Fourth Proportional to 556.11, 833.62 and 278.28

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Solution

The fourth proportional to 556.11, 833.62 and 278.28 is: 417.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    556.11 : 833.62 = 278.28 : x
  2. Step 2: Convert to fraction form
    556.11/833.62 = 278.28/x
  3. Step 3: Cross multiply
    556.11x = 833.62 × 278.28
  4. Step 4: Simplify right side
    556.11x = 231,975.61
  5. Step 5: Solve for x
    x = 231,975.61/556.11
  6. Step 6: Final answer
    x = 417.14

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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.