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Finding the Fourth Proportional to 1,547.77, 2,322.74 and 726.07

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Solution

The fourth proportional to 1,547.77, 2,322.74 and 726.07 is: 1,089.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,547.77 : 2,322.74 = 726.07 : x
  2. Step 2: Convert to fraction form
    1,547.77/2,322.74 = 726.07/x
  3. Step 3: Cross multiply
    1,547.77x = 2,322.74 × 726.07
  4. Step 4: Simplify right side
    1,547.77x = 1,686,467.84
  5. Step 5: Solve for x
    x = 1,686,467.84/1,547.77
  6. Step 6: Final answer
    x = 1,089.61

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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.