Home / 1,531.26-2,295.81-490.91

Finding the Fourth Proportional to 1,531.26, 2,295.81 and 490.91

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Solution

The fourth proportional to 1,531.26, 2,295.81 and 490.91 is: 736.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,531.26 : 2,295.81 = 490.91 : x
  2. Step 2: Convert to fraction form
    1,531.26/2,295.81 = 490.91/x
  3. Step 3: Cross multiply
    1,531.26x = 2,295.81 × 490.91
  4. Step 4: Simplify right side
    1,531.26x = 1,127,024.61
  5. Step 5: Solve for x
    x = 1,127,024.61/1,531.26
  6. Step 6: Final answer
    x = 736.01

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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.