Home / 1,148.13-1,722.39-378.63

Finding the Fourth Proportional to 1,148.13, 1,722.39 and 378.63

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Solution

The fourth proportional to 1,148.13, 1,722.39 and 378.63 is: 568.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,148.13 : 1,722.39 = 378.63 : x
  2. Step 2: Convert to fraction form
    1,148.13/1,722.39 = 378.63/x
  3. Step 3: Cross multiply
    1,148.13x = 1,722.39 × 378.63
  4. Step 4: Simplify right side
    1,148.13x = 652,148.53
  5. Step 5: Solve for x
    x = 652,148.53/1,148.13
  6. Step 6: Final answer
    x = 568.01

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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.