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Finding the Fourth Proportional to 556.63, 767.25 and 377.12

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Solution

The fourth proportional to 556.63, 767.25 and 377.12 is: 519.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    556.63 : 767.25 = 377.12 : x
  2. Step 2: Convert to fraction form
    556.63/767.25 = 377.12/x
  3. Step 3: Cross multiply
    556.63x = 767.25 × 377.12
  4. Step 4: Simplify right side
    556.63x = 289,341.48
  5. Step 5: Solve for x
    x = 289,341.48/556.63
  6. Step 6: Final answer
    x = 519.81

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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.