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Finding the Fourth Proportional to 1,331.15, 1,994.98 and 590.51

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Solution

The fourth proportional to 1,331.15, 1,994.98 and 590.51 is: 884.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,331.15 : 1,994.98 = 590.51 : x
  2. Step 2: Convert to fraction form
    1,331.15/1,994.98 = 590.51/x
  3. Step 3: Cross multiply
    1,331.15x = 1,994.98 × 590.51
  4. Step 4: Simplify right side
    1,331.15x = 1,178,049.04
  5. Step 5: Solve for x
    x = 1,178,049.04/1,331.15
  6. Step 6: Final answer
    x = 884.99

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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.