Home / 1,021.19-1,531.16-558.32

Finding the Fourth Proportional to 1,021.19, 1,531.16 and 558.32

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Solution

The fourth proportional to 1,021.19, 1,531.16 and 558.32 is: 837.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,021.19 : 1,531.16 = 558.32 : x
  2. Step 2: Convert to fraction form
    1,021.19/1,531.16 = 558.32/x
  3. Step 3: Cross multiply
    1,021.19x = 1,531.16 × 558.32
  4. Step 4: Simplify right side
    1,021.19x = 854,866.80
  5. Step 5: Solve for x
    x = 854,866.80/1,021.19
  6. Step 6: Final answer
    x = 837.13

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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.