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Finding the Fourth Proportional to 934.92, 1,290.24 and 585.72

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Solution

The fourth proportional to 934.92, 1,290.24 and 585.72 is: 808.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    934.92 : 1,290.24 = 585.72 : x
  2. Step 2: Convert to fraction form
    934.92/1,290.24 = 585.72/x
  3. Step 3: Cross multiply
    934.92x = 1,290.24 × 585.72
  4. Step 4: Simplify right side
    934.92x = 755,719.37
  5. Step 5: Solve for x
    x = 755,719.37/934.92
  6. Step 6: Final answer
    x = 808.33

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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.