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Finding the Fourth Proportional to 1,253.87, 1,726.31 and 1,088.01

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Solution

The fourth proportional to 1,253.87, 1,726.31 and 1,088.01 is: 1,497.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,253.87 : 1,726.31 = 1,088.01 : x
  2. Step 2: Convert to fraction form
    1,253.87/1,726.31 = 1,088.01/x
  3. Step 3: Cross multiply
    1,253.87x = 1,726.31 × 1,088.01
  4. Step 4: Simplify right side
    1,253.87x = 1,878,237.10
  5. Step 5: Solve for x
    x = 1,878,237.10/1,253.87
  6. Step 6: Final answer
    x = 1,497.96

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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.