Home / 1,217.12-1,825.32-437.06

Finding the Fourth Proportional to 1,217.12, 1,825.32 and 437.06

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Solution

The fourth proportional to 1,217.12, 1,825.32 and 437.06 is: 655.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,217.12 : 1,825.32 = 437.06 : x
  2. Step 2: Convert to fraction form
    1,217.12/1,825.32 = 437.06/x
  3. Step 3: Cross multiply
    1,217.12x = 1,825.32 × 437.06
  4. Step 4: Simplify right side
    1,217.12x = 797,774.36
  5. Step 5: Solve for x
    x = 797,774.36/1,217.12
  6. Step 6: Final answer
    x = 655.46

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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.