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Finding the Fourth Proportional to 1,727.16, 2,590.90 and 573

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Solution

The fourth proportional to 1,727.16, 2,590.90 and 573 is: 859.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,727.16 : 2,590.90 = 573 : x
  2. Step 2: Convert to fraction form
    1,727.16/2,590.90 = 573/x
  3. Step 3: Cross multiply
    1,727.16x = 2,590.90 × 573
  4. Step 4: Simplify right side
    1,727.16x = 1,484,585.70
  5. Step 5: Solve for x
    x = 1,484,585.70/1,727.16
  6. Step 6: Final answer
    x = 859.55

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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.