Home / 1,037.12-1,554.59-420.57

Finding the Fourth Proportional to 1,037.12, 1,554.59 and 420.57

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Solution

The fourth proportional to 1,037.12, 1,554.59 and 420.57 is: 630.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,037.12 : 1,554.59 = 420.57 : x
  2. Step 2: Convert to fraction form
    1,037.12/1,554.59 = 420.57/x
  3. Step 3: Cross multiply
    1,037.12x = 1,554.59 × 420.57
  4. Step 4: Simplify right side
    1,037.12x = 653,814.97
  5. Step 5: Solve for x
    x = 653,814.97/1,037.12
  6. Step 6: Final answer
    x = 630.42

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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.