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Finding the Fourth Proportional to 556.28, 767.33 and 345.99

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Solution

The fourth proportional to 556.28, 767.33 and 345.99 is: 477.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    556.28 : 767.33 = 345.99 : x
  2. Step 2: Convert to fraction form
    556.28/767.33 = 345.99/x
  3. Step 3: Cross multiply
    556.28x = 767.33 × 345.99
  4. Step 4: Simplify right side
    556.28x = 265,488.50
  5. Step 5: Solve for x
    x = 265,488.50/556.28
  6. Step 6: Final answer
    x = 477.26

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.