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Finding the Fourth Proportional to 556.68, 767.84 and 425.46

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Solution

The fourth proportional to 556.68, 767.84 and 425.46 is: 586.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    556.68 : 767.84 = 425.46 : x
  2. Step 2: Convert to fraction form
    556.68/767.84 = 425.46/x
  3. Step 3: Cross multiply
    556.68x = 767.84 × 425.46
  4. Step 4: Simplify right side
    556.68x = 326,685.21
  5. Step 5: Solve for x
    x = 326,685.21/556.68
  6. Step 6: Final answer
    x = 586.85

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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.