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Finding the Fourth Proportional to 941.20, 1,298.86 and 527.20

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Solution

The fourth proportional to 941.20, 1,298.86 and 527.20 is: 727.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    941.20 : 1,298.86 = 527.20 : x
  2. Step 2: Convert to fraction form
    941.20/1,298.86 = 527.20/x
  3. Step 3: Cross multiply
    941.20x = 1,298.86 × 527.20
  4. Step 4: Simplify right side
    941.20x = 684,763.22
  5. Step 5: Solve for x
    x = 684,763.22/941.20
  6. Step 6: Final answer
    x = 727.54

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Double scale
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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.