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Finding the Fourth Proportional to 608.29, 912.16 and 283.75

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Solution

The fourth proportional to 608.29, 912.16 and 283.75 is: 425.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    608.29 : 912.16 = 283.75 : x
  2. Step 2: Convert to fraction form
    608.29/912.16 = 283.75/x
  3. Step 3: Cross multiply
    608.29x = 912.16 × 283.75
  4. Step 4: Simplify right side
    608.29x = 258,825.40
  5. Step 5: Solve for x
    x = 258,825.40/608.29
  6. Step 6: Final answer
    x = 425.50

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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.