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Finding the Fourth Proportional to 956.39, 1,319.92 and 583.62

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Solution

The fourth proportional to 956.39, 1,319.92 and 583.62 is: 805.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    956.39 : 1,319.92 = 583.62 : x
  2. Step 2: Convert to fraction form
    956.39/1,319.92 = 583.62/x
  3. Step 3: Cross multiply
    956.39x = 1,319.92 × 583.62
  4. Step 4: Simplify right side
    956.39x = 770,337.15
  5. Step 5: Solve for x
    x = 770,337.15/956.39
  6. Step 6: Final answer
    x = 805.46

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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.