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Finding the Fourth Proportional to 1,505.28, 2,254.80 and 801.72

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Solution

The fourth proportional to 1,505.28, 2,254.80 and 801.72 is: 1,200.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,505.28 : 2,254.80 = 801.72 : x
  2. Step 2: Convert to fraction form
    1,505.28/2,254.80 = 801.72/x
  3. Step 3: Cross multiply
    1,505.28x = 2,254.80 × 801.72
  4. Step 4: Simplify right side
    1,505.28x = 1,807,718.26
  5. Step 5: Solve for x
    x = 1,807,718.26/1,505.28
  6. Step 6: Final answer
    x = 1,200.92

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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.