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Finding the Fourth Proportional to 956.20, 1,319.57 and 583.19

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Solution

The fourth proportional to 956.20, 1,319.57 and 583.19 is: 804.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    956.20 : 1,319.57 = 583.19 : x
  2. Step 2: Convert to fraction form
    956.20/1,319.57 = 583.19/x
  3. Step 3: Cross multiply
    956.20x = 1,319.57 × 583.19
  4. Step 4: Simplify right side
    956.20x = 769,560.03
  5. Step 5: Solve for x
    x = 769,560.03/956.20
  6. Step 6: Final answer
    x = 804.81

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Half scale
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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.