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Finding the Fourth Proportional to 1,206.69, 1,808.66 and 556.07

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Solution

The fourth proportional to 1,206.69, 1,808.66 and 556.07 is: 833.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,206.69 : 1,808.66 = 556.07 : x
  2. Step 2: Convert to fraction form
    1,206.69/1,808.66 = 556.07/x
  3. Step 3: Cross multiply
    1,206.69x = 1,808.66 × 556.07
  4. Step 4: Simplify right side
    1,206.69x = 1,005,729.74
  5. Step 5: Solve for x
    x = 1,005,729.74/1,206.69
  6. Step 6: Final answer
    x = 833.46

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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.