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Finding the Fourth Proportional to 1,574.21, 2,361.30 and 958.09

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Solution

The fourth proportional to 1,574.21, 2,361.30 and 958.09 is: 1,437.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,574.21 : 2,361.30 = 958.09 : x
  2. Step 2: Convert to fraction form
    1,574.21/2,361.30 = 958.09/x
  3. Step 3: Cross multiply
    1,574.21x = 2,361.30 × 958.09
  4. Step 4: Simplify right side
    1,574.21x = 2,262,337.92
  5. Step 5: Solve for x
    x = 2,262,337.92/1,574.21
  6. Step 6: Final answer
    x = 1,437.13

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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.