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Finding the Fourth Proportional to 1,574.55, 2,361.80 and 404.55

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Solution

The fourth proportional to 1,574.55, 2,361.80 and 404.55 is: 606.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,574.55 : 2,361.80 = 404.55 : x
  2. Step 2: Convert to fraction form
    1,574.55/2,361.80 = 404.55/x
  3. Step 3: Cross multiply
    1,574.55x = 2,361.80 × 404.55
  4. Step 4: Simplify right side
    1,574.55x = 955,464.17
  5. Step 5: Solve for x
    x = 955,464.17/1,574.55
  6. Step 6: Final answer
    x = 606.82

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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.