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Finding the Fourth Proportional to 1,254.64, 1,731.69 and 835.01

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Solution

The fourth proportional to 1,254.64, 1,731.69 and 835.01 is: 1,152.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,254.64 : 1,731.69 = 835.01 : x
  2. Step 2: Convert to fraction form
    1,254.64/1,731.69 = 835.01/x
  3. Step 3: Cross multiply
    1,254.64x = 1,731.69 × 835.01
  4. Step 4: Simplify right side
    1,254.64x = 1,445,972.05
  5. Step 5: Solve for x
    x = 1,445,972.05/1,254.64
  6. Step 6: Final answer
    x = 1,152.50

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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.