Home / 1,113.04-1,669.64-383.13

Finding the Fourth Proportional to 1,113.04, 1,669.64 and 383.13

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Solution

The fourth proportional to 1,113.04, 1,669.64 and 383.13 is: 574.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,113.04 : 1,669.64 = 383.13 : x
  2. Step 2: Convert to fraction form
    1,113.04/1,669.64 = 383.13/x
  3. Step 3: Cross multiply
    1,113.04x = 1,669.64 × 383.13
  4. Step 4: Simplify right side
    1,113.04x = 639,687.26
  5. Step 5: Solve for x
    x = 639,687.26/1,113.04
  6. Step 6: Final answer
    x = 574.72

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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.