Home / 1,038.20-1,557.30-461.24

Finding the Fourth Proportional to 1,038.20, 1,557.30 and 461.24

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Solution

The fourth proportional to 1,038.20, 1,557.30 and 461.24 is: 691.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,038.20 : 1,557.30 = 461.24 : x
  2. Step 2: Convert to fraction form
    1,038.20/1,557.30 = 461.24/x
  3. Step 3: Cross multiply
    1,038.20x = 1,557.30 × 461.24
  4. Step 4: Simplify right side
    1,038.20x = 718,289.05
  5. Step 5: Solve for x
    x = 718,289.05/1,038.20
  6. Step 6: Final answer
    x = 691.86

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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.