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Finding the Fourth Proportional to 551.68, 760.96 and 377.12

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Solution

The fourth proportional to 551.68, 760.96 and 377.12 is: 520.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    551.68 : 760.96 = 377.12 : x
  2. Step 2: Convert to fraction form
    551.68/760.96 = 377.12/x
  3. Step 3: Cross multiply
    551.68x = 760.96 × 377.12
  4. Step 4: Simplify right side
    551.68x = 286,973.24
  5. Step 5: Solve for x
    x = 286,973.24/551.68
  6. Step 6: Final answer
    x = 520.18

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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.