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Finding the Fourth Proportional to 1,415.81, 2,123.61 and 594.05

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Solution

The fourth proportional to 1,415.81, 2,123.61 and 594.05 is: 891.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,415.81 : 2,123.61 = 594.05 : x
  2. Step 2: Convert to fraction form
    1,415.81/2,123.61 = 594.05/x
  3. Step 3: Cross multiply
    1,415.81x = 2,123.61 × 594.05
  4. Step 4: Simplify right side
    1,415.81x = 1,261,530.52
  5. Step 5: Solve for x
    x = 1,261,530.52/1,415.81
  6. Step 6: Final answer
    x = 891.03

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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.