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Finding the Fourth Proportional to 1,252.81, 1,870.25 and 1,088.83

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Solution

The fourth proportional to 1,252.81, 1,870.25 and 1,088.83 is: 1,625.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,252.81 : 1,870.25 = 1,088.83 : x
  2. Step 2: Convert to fraction form
    1,252.81/1,870.25 = 1,088.83/x
  3. Step 3: Cross multiply
    1,252.81x = 1,870.25 × 1,088.83
  4. Step 4: Simplify right side
    1,252.81x = 2,036,384.31
  5. Step 5: Solve for x
    x = 2,036,384.31/1,252.81
  6. Step 6: Final answer
    x = 1,625.45

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.