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Finding the Fourth Proportional to 671.53, 1,011.88 and 552.46

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Solution

The fourth proportional to 671.53, 1,011.88 and 552.46 is: 832.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    671.53 : 1,011.88 = 552.46 : x
  2. Step 2: Convert to fraction form
    671.53/1,011.88 = 552.46/x
  3. Step 3: Cross multiply
    671.53x = 1,011.88 × 552.46
  4. Step 4: Simplify right side
    671.53x = 559,023.22
  5. Step 5: Solve for x
    x = 559,023.22/671.53
  6. Step 6: Final answer
    x = 832.46

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.