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Finding the Fourth Proportional to 607.52, 910.91 and 255.70

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Solution

The fourth proportional to 607.52, 910.91 and 255.70 is: 383.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    607.52 : 910.91 = 255.70 : x
  2. Step 2: Convert to fraction form
    607.52/910.91 = 255.70/x
  3. Step 3: Cross multiply
    607.52x = 910.91 × 255.70
  4. Step 4: Simplify right side
    607.52x = 232,917.82
  5. Step 5: Solve for x
    x = 232,917.82/607.52
  6. Step 6: Final answer
    x = 383.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.