Home / 1,113.07-1,669.48-291.23

Finding the Fourth Proportional to 1,113.07, 1,669.48 and 291.23

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Solution

The fourth proportional to 1,113.07, 1,669.48 and 291.23 is: 436.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,113.07 : 1,669.48 = 291.23 : x
  2. Step 2: Convert to fraction form
    1,113.07/1,669.48 = 291.23/x
  3. Step 3: Cross multiply
    1,113.07x = 1,669.48 × 291.23
  4. Step 4: Simplify right side
    1,113.07x = 486,207.74
  5. Step 5: Solve for x
    x = 486,207.74/1,113.07
  6. Step 6: Final answer
    x = 436.82

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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.