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Finding the Fourth Proportional to 608.91, 913.67 and 284.51

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Solution

The fourth proportional to 608.91, 913.67 and 284.51 is: 426.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    608.91 : 913.67 = 284.51 : x
  2. Step 2: Convert to fraction form
    608.91/913.67 = 284.51/x
  3. Step 3: Cross multiply
    608.91x = 913.67 × 284.51
  4. Step 4: Simplify right side
    608.91x = 259,948.25
  5. Step 5: Solve for x
    x = 259,948.25/608.91
  6. Step 6: Final answer
    x = 426.91

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Double scale
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Similar ratio
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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.