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Finding the Fourth Proportional to 1,505.26, 2,077.44 and 915.88

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Solution

The fourth proportional to 1,505.26, 2,077.44 and 915.88 is: 1,264.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,505.26 : 2,077.44 = 915.88 : x
  2. Step 2: Convert to fraction form
    1,505.26/2,077.44 = 915.88/x
  3. Step 3: Cross multiply
    1,505.26x = 2,077.44 × 915.88
  4. Step 4: Simplify right side
    1,505.26x = 1,902,685.75
  5. Step 5: Solve for x
    x = 1,902,685.75/1,505.26
  6. Step 6: Final answer
    x = 1,264.02

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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.