Home / 1,038.24-1,557.36-308.36

Finding the Fourth Proportional to 1,038.24, 1,557.36 and 308.36

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Solution

The fourth proportional to 1,038.24, 1,557.36 and 308.36 is: 462.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,038.24 : 1,557.36 = 308.36 : x
  2. Step 2: Convert to fraction form
    1,038.24/1,557.36 = 308.36/x
  3. Step 3: Cross multiply
    1,038.24x = 1,557.36 × 308.36
  4. Step 4: Simplify right side
    1,038.24x = 480,231.42
  5. Step 5: Solve for x
    x = 480,231.42/1,038.24
  6. Step 6: Final answer
    x = 462.54

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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.