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Finding the Fourth Proportional to 558.64, 774.13 and 551.62

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Solution

The fourth proportional to 558.64, 774.13 and 551.62 is: 764.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    558.64 : 774.13 = 551.62 : x
  2. Step 2: Convert to fraction form
    558.64/774.13 = 551.62/x
  3. Step 3: Cross multiply
    558.64x = 774.13 × 551.62
  4. Step 4: Simplify right side
    558.64x = 427,025.59
  5. Step 5: Solve for x
    x = 427,025.59/558.64
  6. Step 6: Final answer
    x = 764.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.