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Finding the Fourth Proportional to 671.56, 925.86 and 551.49

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Solution

The fourth proportional to 671.56, 925.86 and 551.49 is: 760.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    671.56 : 925.86 = 551.49 : x
  2. Step 2: Convert to fraction form
    671.56/925.86 = 551.49/x
  3. Step 3: Cross multiply
    671.56x = 925.86 × 551.49
  4. Step 4: Simplify right side
    671.56x = 510,602.53
  5. Step 5: Solve for x
    x = 510,602.53/671.56
  6. Step 6: Final answer
    x = 760.32

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1.5x scale

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.