Home / 1,051.25-1,577.00-393.45

Finding the Fourth Proportional to 1,051.25, 1,577.00 and 393.45

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Solution

The fourth proportional to 1,051.25, 1,577.00 and 393.45 is: 590.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,051.25 : 1,577.00 = 393.45 : x
  2. Step 2: Convert to fraction form
    1,051.25/1,577.00 = 393.45/x
  3. Step 3: Cross multiply
    1,051.25x = 1,577.00 × 393.45
  4. Step 4: Simplify right side
    1,051.25x = 620,462.77
  5. Step 5: Solve for x
    x = 620,462.77/1,051.25
  6. Step 6: Final answer
    x = 590.21

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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.