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Finding the Fourth Proportional to 671.34, 925.74 and 578.34

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Solution

The fourth proportional to 671.34, 925.74 and 578.34 is: 797.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    671.34 : 925.74 = 578.34 : x
  2. Step 2: Convert to fraction form
    671.34/925.74 = 578.34/x
  3. Step 3: Cross multiply
    671.34x = 925.74 × 578.34
  4. Step 4: Simplify right side
    671.34x = 535,392.47
  5. Step 5: Solve for x
    x = 535,392.47/671.34
  6. Step 6: Final answer
    x = 797.50

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Double scale
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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.