Home / 1,024.24-1,535.36-407.74

Finding the Fourth Proportional to 1,024.24, 1,535.36 and 407.74

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Solution

The fourth proportional to 1,024.24, 1,535.36 and 407.74 is: 611.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,024.24 : 1,535.36 = 407.74 : x
  2. Step 2: Convert to fraction form
    1,024.24/1,535.36 = 407.74/x
  3. Step 3: Cross multiply
    1,024.24x = 1,535.36 × 407.74
  4. Step 4: Simplify right side
    1,024.24x = 626,027.69
  5. Step 5: Solve for x
    x = 626,027.69/1,024.24
  6. Step 6: Final answer
    x = 611.21

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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.