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Finding the Fourth Proportional to 926.60, 1,278.75 and 528.27

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Solution

The fourth proportional to 926.60, 1,278.75 and 528.27 is: 729.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    926.60 : 1,278.75 = 528.27 : x
  2. Step 2: Convert to fraction form
    926.60/1,278.75 = 528.27/x
  3. Step 3: Cross multiply
    926.60x = 1,278.75 × 528.27
  4. Step 4: Simplify right side
    926.60x = 675,525.26
  5. Step 5: Solve for x
    x = 675,525.26/926.60
  6. Step 6: Final answer
    x = 729.04

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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.