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Finding the Fourth Proportional to 671.90, 925.93 and 578.61

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Solution

The fourth proportional to 671.90, 925.93 and 578.61 is: 797.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    671.90 : 925.93 = 578.61 : x
  2. Step 2: Convert to fraction form
    671.90/925.93 = 578.61/x
  3. Step 3: Cross multiply
    671.90x = 925.93 × 578.61
  4. Step 4: Simplify right side
    671.90x = 535,753.08
  5. Step 5: Solve for x
    x = 535,753.08/671.90
  6. Step 6: Final answer
    x = 797.38

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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.