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Finding the Fourth Proportional to 772.76, 1,159.31 and 224.96

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Solution

The fourth proportional to 772.76, 1,159.31 and 224.96 is: 337.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    772.76 : 1,159.31 = 224.96 : x
  2. Step 2: Convert to fraction form
    772.76/1,159.31 = 224.96/x
  3. Step 3: Cross multiply
    772.76x = 1,159.31 × 224.96
  4. Step 4: Simplify right side
    772.76x = 260,798.38
  5. Step 5: Solve for x
    x = 260,798.38/772.76
  6. Step 6: Final answer
    x = 337.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.