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Finding the Fourth Proportional to 941.89, 1,299.78 and 527.89

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Solution

The fourth proportional to 941.89, 1,299.78 and 527.89 is: 728.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    941.89 : 1,299.78 = 527.89 : x
  2. Step 2: Convert to fraction form
    941.89/1,299.78 = 527.89/x
  3. Step 3: Cross multiply
    941.89x = 1,299.78 × 527.89
  4. Step 4: Simplify right side
    941.89x = 686,140.86
  5. Step 5: Solve for x
    x = 686,140.86/941.89
  6. Step 6: Final answer
    x = 728.47

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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.