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Finding the Fourth Proportional to 671.40, 926.08 and 547.07

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Solution

The fourth proportional to 671.40, 926.08 and 547.07 is: 754.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    671.40 : 926.08 = 547.07 : x
  2. Step 2: Convert to fraction form
    671.40/926.08 = 547.07/x
  3. Step 3: Cross multiply
    671.40x = 926.08 × 547.07
  4. Step 4: Simplify right side
    671.40x = 506,624.59
  5. Step 5: Solve for x
    x = 506,624.59/671.40
  6. Step 6: Final answer
    x = 754.58

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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.