Home / 1,355.08-2,031.36-488.92

Finding the Fourth Proportional to 1,355.08, 2,031.36 and 488.92

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Solution

The fourth proportional to 1,355.08, 2,031.36 and 488.92 is: 732.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,355.08 : 2,031.36 = 488.92 : x
  2. Step 2: Convert to fraction form
    1,355.08/2,031.36 = 488.92/x
  3. Step 3: Cross multiply
    1,355.08x = 2,031.36 × 488.92
  4. Step 4: Simplify right side
    1,355.08x = 993,172.53
  5. Step 5: Solve for x
    x = 993,172.53/1,355.08
  6. Step 6: Final answer
    x = 732.93

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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.