Home / 1,538.45-2,307.66-384.20

Finding the Fourth Proportional to 1,538.45, 2,307.66 and 384.20

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Solution

The fourth proportional to 1,538.45, 2,307.66 and 384.20 is: 576.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,538.45 : 2,307.66 = 384.20 : x
  2. Step 2: Convert to fraction form
    1,538.45/2,307.66 = 384.20/x
  3. Step 3: Cross multiply
    1,538.45x = 2,307.66 × 384.20
  4. Step 4: Simplify right side
    1,538.45x = 886,602.97
  5. Step 5: Solve for x
    x = 886,602.97/1,538.45
  6. Step 6: Final answer
    x = 576.30

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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.