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Finding the Fourth Proportional to 938.34, 1,294.72 and 584.35

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Solution

The fourth proportional to 938.34, 1,294.72 and 584.35 is: 806.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    938.34 : 1,294.72 = 584.35 : x
  2. Step 2: Convert to fraction form
    938.34/1,294.72 = 584.35/x
  3. Step 3: Cross multiply
    938.34x = 1,294.72 × 584.35
  4. Step 4: Simplify right side
    938.34x = 756,569.63
  5. Step 5: Solve for x
    x = 756,569.63/938.34
  6. Step 6: Final answer
    x = 806.29

Related Problems

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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.