Home / 1,038.03-1,557.27-307.66

Finding the Fourth Proportional to 1,038.03, 1,557.27 and 307.66

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Solution

The fourth proportional to 1,038.03, 1,557.27 and 307.66 is: 461.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,038.03 : 1,557.27 = 307.66 : x
  2. Step 2: Convert to fraction form
    1,038.03/1,557.27 = 307.66/x
  3. Step 3: Cross multiply
    1,038.03x = 1,557.27 × 307.66
  4. Step 4: Simplify right side
    1,038.03x = 479,110.69
  5. Step 5: Solve for x
    x = 479,110.69/1,038.03
  6. Step 6: Final answer
    x = 461.56

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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.